I bought one to mod but tried it first as is and liked it enough that I used it for a few weeks before starting surgery, and I'm not a box mod fan. It is a great mod for the money (so long as its a 2.1 w 1400mah). Like an earlier post said, it is great to be able to grab and go with just the Revo and not worry about liquid, charge etc. With PT capabilities and built in charging it is truly a no brainer. One major suggestion though: Order some horizontal cartos!!! My only ..... with the unit was the lousy cartos...they burned within an hour to a day max. (and no, I'm not a noob, I have used cartos since day 1) I hate Boges anyway, and on the Revo they were utterly useless. A vertical coil carto doesnt make alot of sense anyway, but on a bottom feeder is just worthless. I switched to horizontals and it was great after that.
PS...def watch the vids on fill method tips to avoid juice leaks into the unit (there are no electronics under/on the atty side, but it still can make a mess and could find its way to the circuits.
Enjoy the Revo!