Time to Get Reo: A Review of the REO Grand


When I first got into vaping, I knew that there had to be more to vaping than ego batteries and cigalikes. One of the first “cool” looking mods I ever came across was the REO almost 2 years ago during a brief and failed attempt at vaping. At the time, I thought it was cool but didn’t know the difference between a clearomizer and a carto tank, and had the intuition not to get involved at that point.

Once I did get into vaping full time, I quickly got bored with the ego batteries and MVP that I started on and went searching for the best way to “level up”. After spending tons of time researching different devices and  armed with slightly more knowledge than I originally had, I came up with the conclusion that the REO and Provari looked like the best options available. So I bought both of them.

The Provari was like a lightbulb moment. I instantly could feel the effortless increase in vape quality. The REO on the other hand, was a huge disappointment. I only went through a couple ML of liquid on it before putting it on the shelf for over 3 months.

The problem was, at the time, I really didn’t understand the difference between a mechanical device and regulated mod like the Provari or even an ego, and as such, I didn’t have the slightest idea how to get the most out of a REO, and the performance at the time paled in comparison to what I was getting out of the Provari.

When I first bought my REO, I bought it directly from reosmods.com. Beforehand, I sent Reo an email directly asking a few questions about the best kind of atomizer to use with it. At the time, I didn’t really understand the difference between rebuildable atomizers and pre-coiled atomizers. I didn’t realize it at the time but I think Reo was probably hesitant to suggest that I purchase a rebuildable because he could probably easily tell from my inquiry that I was a total newb. So he recommended I get a 1.5 ohm disposable dripping atty. I picked up the best quality ones I could find (can’t remember exactly which off the top of my head), and fired one up in the REO. While it did work overall, it woefully underperformed compared to the Provari that I had also newly purchased.

Fast forward about 3-4 months. In that relatively short span of time I learned a great deal more than I originally knew and became deeply interested in rebuildable atomizers. Finally one day it dawned on me that I had a REO, one of the most popular mech mods available, sitting around collecting dust. So I brushed it off and coiled up am A7 bottom feeding atty and gave it a whirl.

What a difference. It was probably my first great experience with a fully mechanical setup. Previously I had only been messing with a Sigeli 19 and 20, which don’t really compare at all with a REO. I started using it more and more and was finally starting to realize why this piece is as popular as it is.

The next big moment in my REO experience happened about a month after that. I placed a small order from Reosmods to get a few extra empty 6ml bottles and a better button cover. Incredibly, I was mistakenly sent a Reomizer instead of what I had ordered. For those who don’t know, a Reomizer is a rebuildable bottom feeding atomizer designed by REO specifically for the REO. I took one look at it and knew there was no way in hell I was going to send it back, so I emailed Reo, paid the difference and fired it up. The results were amazing. The REO, fitted with a well coiled Reomizer works as good as anything I have ever used, and it there is almost no maintenance necessary whatsoever outside of switching and refilling bottles.

So it took me a long time to finally get into a groove with it, but it was worth the wait.

With that out of the way, let’s get into the details.

What it is

The REO is a fully mechanical mod. It is made out of a milled block of steel. It has a front sliding door where the battery and a bottle of juice goes. The door is held on by a magnet. It takes an 18650 battery and has a hot spring built in that will collapse in the event of a short. It is designed to hold a 6ml bottle, although I have been able to squeeze bigger bottles into it. There is an opening on the door which allows you to depress the bottle to shoot juice up through a tube and into the bottom of an atomizer – provided the atomizer is made to work as a bottom feeder – IE, it needs to have a somewhere in the bottom or through the center pin to allow juice to flow from the tube into the atty.


Indestructible. The thing is built like a tank. You could drop it in the toilet, drop it off a building or run over it with a car and chances are you would still be able to get a good vape off it right afterwards.

Made in the USA. I’m not a fanatic about buying USA made products – I buy a great deal of stuff from China, so its not hugely important to me. But there is something to be said for an extremely well built mod made from a block of steel right here in the USA.

Looks Cool. The thing looks awesome. You will surely impress any vaper who hasn’t seen one before.  It basically speaks for itself.

Performance. It performs like a champ. I took this thing with me on a 3 day camping trip over the summer. It was outside with me the whole 3 days in 90  degree weather in the woods and I didn’t have a single issue. Camping is one of those times where you really miss cigs, but having my REO on the camping trip was a perfect recipe for success and I didn’t have a single fleeting thought about lighting up.

Low Maintenance. Once you have your atty, have your batteries and have your 6ml bottles ready to go, you are set. There is little you ever need to do to keep this baby putting clouds in the air.


Attractive to beginners, but not a beginner device. I know I can’t be the only person who bought one of these as a newb and thought it sucked strictly because I didn’t know what I was doing. Beginners are naturally going to be drawn to the REO because of how cool it is, but unless they don’t mind a more tame hit, they probably won’t be super impressed.

Hot spring is a pain in the ass to change. I somehow managed to blow out the hot spring on this during my first go around when I was using stock 1.5 ohm atties on it- don’t ask me how, but it happened. The replacements are cheap and I haven’t had to replace it since, but the screw is small and in an awkward position. It took me a while to get the new one in and I am not looking forward to ever having to do it again.

Not a lot of atties that are optimal for it. Honestly there is nothing really close to a Reomizer that I have tried on this thing. I do have an A7 that works, but not as well and looks way dumber on the REO.  There are a few others like the Cyclone, but it is expensive, you have to get the bottom feeder kind, and I personally don’t care for that style of atty that much to begin with. So really you need to have a Reomizer, and you need to know how to use it or you won’t be getting the most out of your REO, plain and simple.

Stock button is shitty. The stock button really sucks in my opinion. They should almost just come with the better button since it only costs a couple bucks anyway and it is a million percent easier to fire with the improved button. The stock button does it no justice at all.

Bulky. It is a hefty piece, and takes up more pocket room than a pack of smokes would. I personally wouldn’t carry this in my pocket in most cases. It’s not a huge deal, but if you like keeping a stealth mod in your pocket when you’re on the go, the REO or at least the REO Grand probably isn’t going to cut it.

Who is it For?

Personally, I would only recommend this to people who already understand mechanical mods. If you don’t know about battery safety, or how to wrap a good coil, you are probably better off with something else until you are at that point. Otherwise you won’t be getting the most out of it.

In my opinion the REO is best for people who are comfortable with mechanical mods.

Where Can I Get One?


Do You Use it?

Off and on. It’s great for trips when you don’t want to be carrying a bunch of shit around with you or if you’re going to be in the car for a long time. It’s not really something I use a TON when I’m at my desk at home or out on the town doing routine stuff, but I absolutely do use it and will probably have one in my collection forever.

The Bottom Line

Its a great piece if you know what you’re doing. Almost a must have if you are into mechanicals. If you are new, I would strongly suggest steering clear until you understand what it is, how to REALLY use it, and are prepared to also buy a Reomizer to accompany it.  If that sounds like you, and you’re on the fence about it right now, then by all means go for it!

Time to Get Reo: A Review of the REO Grand
Ease of Use

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