Yes! I mostly use RTAs (75-80% of the time?) but I also use nautilus minis and vika fantasy, and when I get the coils from fasttech (if ever), I'm going to try the Ego One with CLR coils (so, in that case, a combo of prebuilt and rebuildable).
I usually start the day with my nautilus mini because if the coil's not good, I DO NOT feel like wrapping and wicking a coil half asleep and bleary before I've even had my first cuppa. So I just keep my favorite morning juice in a Nauti, and skip to my RTAs after that. And like Bonskibon, I also tend to use them when I go out, because they don't leak, and I can change a coil in few seconds if I need to.