I've gone through my RTA phase, and liked the Bachelor best. Easy fill and coiling, minimal leaking due to juice flow cutoff (still my preferred pocketable setup.)
That said, I've moved on to the RDTA and tried a few. I didn't care for the Velocity RDTA, cap was loose and easily knocked off and it had leaks if not kept vertical.
My preferred is the Avocado RDTA24. Love it, and just got another as well as the bottom airflow version as well. I'd stick with the standard version, the bottom flow is a nice vape but a pain to fill.
Avocado RDTA24 is my recommendation. I use 10 wrap 26g stainless for about .45ohm at 38 watts with 8mg DIY unflavored juice. Works for me, coils last for months, and wicks last for weeks.