When I first saw the Reuleaux RX200 (and DNA200 version for that matter) I thought it looked ... well kind of weird... and big and bulky. But then again, I wasn't really into box mods at all at that time. Now, however, I feel kind of different. I don't think the Reuleaux mods are the best looking mods out there, but after I got my RX200 the shape of it makes more sense and I guess that affects how I think it looks as well. The thing is that it's actually not that big. I guess it's about as big as it needs to be to fit three 18650 batteries, and it does fit very well into your hand. At least my hand, and I think I've got kind of average sized hands. When the Reuleaux first came it look very unusual I guess, but the shape has been copied by others, and there is a reason for that. The RX2/3 with three batteries installed looks pretty much exactly like an RX200S. I think the adjustment buttons are slightly different, and of course it's battery lid is different but that's about it. It feels pretty much the same. With only two batteries installed, it is of course lighter, but in my opinion this shape also feels very comfortable in your hand. The screen is also the same, quite big and easy to read, and you can even change the logo or install your own custom firmware with different fonts. I've only changed the logo, but changing fonts and so on doesn't seem to difficult either... there are quite a few tutorials online. All in all the RX2/3 feels like a solid device.

Using the RX2/3 is pretty straight forward. I'm not going to go through all the

functions, it's all intuitive and all in the manual as well. 5 clicks to turn on and off, 3 to enter the menu and switch modes. Might be worth mentioning that you can adjust the watts in TC mode as well and you need to do 4 clicks to enter that menu, while in TC mode. Simple, intuitive and very easy to use.

bottom of the mod. Works very well if you ask me, the doors both click into the mod nicely and and pops right out once you push the button. 

You can charge the batteries via the USB port below the screen, but it is recommended, and faster, to use an external charger. What you need to think about if you're switching "modes" from two to three batteries or visa versa is that you need to make sure the batteries are all evenly charged. That means, in practice, they should all be fully charged and all the same type. In fact you should have a set of three and a set of two that are charged together at all times. I've used it mostly with two batteries and I can pretty much get at least a day of vaping from those with my vaping style so I imagine I'll keep doing that most of the time. But if I know it's going to be a while until I can charge again, having the option to put three batteries in there is just great.