I started with simple Macro coils. I use Japanese cotton for my wicking and didn't want to risk getting a dry hit with Micro coils. I'm considering, in the near future, going with some cellucotton (rayon) due to less flavor carryover, better wicking properties, and less of a chance for a dry hit with simple Micro coils. Currently I've been mainly building variations of twisted coils and running them mainly as duals in parallel. I do have an RDA set up with twisted quad coils (0.5 ohms) that I occasionally get out to vape. My go to (60% of the time) is a Fogger V6.0 running twisted dual macros at 1.3 ohms on an iPV mini.
The main thing I do is calculate, measure, measure, and measure. I have a volt/ohm meter with alligator clip leads for measuring each coil after winding as well as a 510 ohm meter. If you or anyone decides to go the twisted route I highly recommend torching it after initial twisting before wrapping because it is really springy. If you don't have ceramic tipoed tweezers, get some. Watch to make sure your lead wires are tight by checking them multiple times, I periodically continue to check mine due to potential loosening from thermal cycling. Also, as I'm sure you've either read or seen, keep your leads as short as possible (minimize lead loss) and cut the backside flush with terminal posts (prevents shorts).
I initially fire my coil builds on a protected/regulated mod and finish arranging, dressing, and tightening them prior to wicking. I also do my first vaping of them on the protected/regulated mod before going with it on anything else. I use well known and characterized batteries that will take more than the calculated maximum and regulated mod protection current (e.g., a battery capable of 25A constant current, build design for 18A [at maximum voltage], and regulated mod protection at 20A). I say all this to you to reinforce being safe!
Edited for better read and spelling corrections.