Are you gonna be dripping rather than squonking?
If so
Skill RDA is fantastic but a bit more pricey my favourite RDA for complex builds
Goon and Kennedy are both well liked by a lot of people have a large following most coil builders out there have one or both I'm yet to get either though
Icon, Peerless, Rashomon, Druga all good RDAs in the mid range bracket I own the first 2 at the moment though will pick up the others as well (Peerless wins for me on flavour and draw, icon on utility and build quality)
also check out the skywalker, the wotofo lush plus or the Cigpet Eco
Pharoah Dripper tank is very good although more of an RDTA to me flavour is on point and has a lovely draw although refilling is a bit of a chore it's only 2ml
Flavour wise hadaly hands down though it shines more on squonker mod as juice capacity is tiny
If I were to choose right now for dripping from the Ones I own it would be the Skill RDA
Head over to the written review section then go into the atomoziers sub section for further info or look any of these up in YouTube
Edit here is the link
http://vapingunderground.com/forums/atomizers.75/