Hey I wanted to get the rev 2.1 as my first
ecig for the capacity and battery, do you recommend it? if not any similar products?

Bro, if this is a bottom feeder you are talking about, I would recommend a REO over any other. They don't cost much more initially, but will wind up saving you big down the road. Check them out in REOsmods.com. Some are lucky enough to get em as their first
device. I wasn't that fortunate. If you don't get one now, you will when you get tired of playin with toys.
They are very solid and dependable. You won't be disappointed. Sorry I don't know anything about the device you mentioned. When you have the best, you don't even look at other devices.
Shot thru cyberspace with my iGun