Usually they are "RBAs" rather than "RDAs" (the D is for dripping.) But if what you don't like about dripping is the frequency of the refills, RDAs take 10 or so drops, depending on the amount of wick.
I'm not really an advice giver. I have yet to successfully build a coil. You will get no tips from me on
how to do it. But as I'm only a couple of weeks ahead of you in the research phase, I will point you at things I've found that look useful.
And I'm not even trying to build again until I figure out which one of this-type thing to buy:
10x Magnifying Glass Headset Loupe Magnifier Lens Visor with 2 LED Light - $7.85
I'm tired of squinting and trying to see the tiny wire. It's worse than threading a needle and my eyes are getting very old.