Hi! The Roller is a pleasure to use. It's so easy to switch out battery sizes, plus the short stop fuse or the Kick either one can be used as well. The OHMS is just a matter of making your coils to suit. That's the beauty of the DID's, is being able to wrap the desired OHM to suit whichever mod. I like the Roller with genuine DID combo the best because: I never have to squonk, the DID is always wicking. The button is a true delight to push, very very comfortable, like a flat keyboard key, but better. The Roller is the best designed telescopic mod out there, because it has a battery cap for changing out the batts instead of having to twist for eternity the tube part.
To sum it up? The Roller and the genuine DID offers the vaper the most versatile and comfortable combo out there. You're never stuck in any one particular mode or ohm. Don't like your coil? ReWrap it! (don't like your Cisco atty of the day? Toss it, put on another).
I still have a Cisco on my Reo, and the smoothness of the DID outshines the Cisco by far. (more sizzle, less spatter). But the Cisco's are nice! I'm not saying they're not good attys, but for me, the genuine DID's outshine them by far. (oops, already said that lol).