I use a few single coil RDA,s , it depends if you want an open airy draw or a slight to tight restrictive draw but still DTL,
These i find give better flavours after going through many to find the ones i like an keep,
Le Concorde RDA , 22mm BF
(sxk version) is great,
Narda RDA 22mm BF (SXK)one of best flavour rda,s made,
Pocket RDA 22mm bf it’s easier to build than Narda but very similar ,
Venom RDA BF (SXK)22mm
Flave 22mm RDA , bf
And flave RdTA, much better than the wasp nano , you font drink juice like the wasp,
Mulciber RDA , 22mm
not sure of cloner great little single coil bf RDA, comes with a dual airflow rings, or single one sided very easy to build on reduced chamber
Pelso V3 RDA , not tried the clone but OG is very nice can do single dual coil builds msny option of topcaps airflows, build ect , in Single coil mode its one of favs along side the le Concorde and Narda,
I do have a few others but find i use these listed most,
And mainly single coil RTA,s now