I had a helluva time adjusting to RDTA/RTAs, but now that I have, the only time I want to use my factory coil tanks is when I'm driving. Still not quite confident enough that the RDTAs and RTAs won't leak out in my purse. I had that happen once - not an RDTA or RTA, but a Kabuki that I didn't get screwed back together right. When I went to take it out of the pocket inside my purse, the tank pulled right apart, and dumped about 3 ml of juice onto the lining of my purse. I was pissed.
Well, now that I think of it, I do use my Geekvape Illusion Mini tanks quite a bit, too, with Atlantis-style Vaporesso ccell coils. One of those tanks has become my driving tank, though, because it holds more liquid than some of my others.
When I get my feet under me a little better, maybe I can switch to using my Zeus RTA as a driving tank. It's supposed to be leakproof, but of course, I have managed to get it to leak by putting it back together incorrectly. Have done ok the last couple of times, though.
Mechanically inclined, I am not.
When all is said and done, though, I probably have enough coils of various kinds to last me the rest of my life, unless I radically change the way I vape. It will be nice to not have to buy coils.