Funny, I'm over at the opposite end of the spectrum.
I now have RBAs on four of my bottom feeders---two A7-Mini RBAs (designed to be bottom-fed) and two YK1-Mini RDAs (modded from dripping to bottom-fed by using a dremel with a .033" microbit to drill a small channel through the silicone insulator that surrounds the positive pin inside the 510 connector---that tiny juice channel works beautifully for squonking, by the way, and appears to cause no danger of shorting out the positive pin, since the insulator is still intact). I've got 1.3 ohm micro-coils (29 GA Kanthal A-1) with cotton wicks on the YK1 minis while the A7s still have the regular coils they came with---2.3 ohm, presumably 32 GA, with silica wicks. I'll swap those out at some point for 1.5 ohm 29 GA micro-coils with cotton wicks.
One A7 is running on an 18650 wooden Phid bottom-feeder, with the other A7 on a 5-volt regulated Juicy Luicy bottom-feeders. The YK1s are also paired the same way, with my other Phid and my other Juicy Luicy. Despite the differing coil resistances and voltages, all four are giving lovely flavor and copious vapor production.
My two Vapage V2 (3.7 volt, single-14500) bottom-feeders work best with Vapage 1.5 ohm hybrid slant-coil atomizers (and don't work very well with any other atties), so I'll leave them as-is, while my Old Goat and Missy Wetbox (also 3.7 volt, single-14500 boxes) are outfitted with Kanger 2.0 ohm bottom-coil cartos that I've converted to atties by pulling out the polyester fiber batting and center air tube (the batting and air tube just sit on top of the coils, so removing them with needle-nose pliers is a snap---a slight pull and they come right out, leaving the modified cartos as bridgeless atties). One 14500 600mAh IMR battery is a little too anemic to provide adequate power for RBAs with coils lower than 1.5 ohms. Anyway, those batteries are right at the limit of their design capabilities with regular 1.5-2.0 ohm atties, so I don't want to overly stress them. Better safe than sorry.
I still use a JoyeTech atty on one of my VAMOs as my dedicated "juice tester," and my large stash of JoyeTech atties won't go to waste, since I like to tinker and change things up often just for the fun of it, but right now I'm certainly glad that I didn't buy another 50 of the JoyeTechs.
I also ordered four of the new Efest 18650 IMR LiMn high-drain 20-amp (30C rating) batteries. I've been using either 5-volt NIMH batteries or the grey Panasonic hybrid CGR18650CH batteries in my mechanical mods, but the Efest will be nice to have for minimizing voltage drop or allowing me to try sub-ohm vaping should I decide to take that daredevil plunge.
As much as I respect dripping and feel that it's about the purest of all the vaping methods, I have to admit that my bottom-feeders with RBAs are looking better and better at this point as possibly the best of all worlds---atties, cartos, tanks. But that's probably overstating a momentary opinion, based as it is on the flush of infatuation that follows a new success (building micro-coils).
Just about everything in vaping waxes and wanes for me---you name it, and I've probably not only tried it, but quite likely been around the block and back with it, often on a recurring basis. A more reasonable and accurate statement might be simply that I'm enjoying my RBA bottom-feeders very much right now, and leave it at that.