Wow. Folks sure get emotional about heating juice to make vapor.
I use a bit of everything. It depends on the situation and my mood. If I have new juice samples, FOR ME nothing beats my IGO-L or W with a quick coil and some cotton. Cotton changes out in about 20 seconds and I'm on to another flavor. I really like using the RDAs at home. I'm not in a race, just leisurely vaping, a few drips at a time. I don't find it annoying, but relaxing. I don't mind "fiddling". It's all part of the "hobby" for me.
On the go I generally use clearos for convenience. For my commute (car) and work I use standard ego batteries with clearos. If I'm out after work I might carry a mod with a tank.
I do have a couple IBTanked tanks, and a couple of Smok DCT tanks, but generally also use those at home. No particular reason - they work well and vape well. I may use one in the scenario above with one of my mods, it just depends on what I feel like using.
I may pick up some cheap clearos and egos for the car, I had an incident today with my mech and carto tank flying off the seat, to between the door and the seat, where I couldn't reach it.