I was just thinking of starting a similar thread!
I have been thinking about this lately since finding my Erlkonigin delivers better flavour than any other device i've tried. I've been wondering whether to try the expromizer or squape R or seriously hyped RDAs like the Plumeveil, Vulcan or Veritas or even try the CLT 2 or Castle as i'm always on the quest for ultimate flavour. I took out my magma today after a few months of it sitting on the shelf and I was not impressed. Now most people would agree that this is supposed to be one of the best if not the best flavour RDAs on the market (the reason I bought it). So if that was so hyped and still not as good as my Erl then I'm sure the same applies to many others. I used to think it was good which it probably was compared to my Taifun GT but then my Taifun GT was great compared to the evod I started on.
I don't particularly like the inconvenience of dripping and am not obsessed with low ohms or cloud chasing - 1 ohm is fine for me - so for me it's all about flavour. The reason I got an RDA in the first place was because of supposedly superior flavour and just to have something for tasting samples too. Maybe I should forget about getting more RDAs if they don't deliver superior flavour and focus on trying tanks.
One thing i never understood is everyone seems to be saying you - reducing the chamber in this RDA so you get more flavour. So if you get more flavour with a small chamber why not use a device that has an even smaller chamber - an RTA.
Edit: Just noticed the person above me is thinking of getting an Erl! Coincidence!
i think the consensus among most RDA/RBA/RTA vapers who do all feel the same; an RTA rebuildable tank type , which has a feed system either gravity= above the coil, or under (?) - not sure about under as the Genesis, which is an RBA imo... but RTA gives better flavor than a RDA.
(RTA can be filler type too like Prometey2 or Spheroid with filler above the coil imo)
You're talking Erlk... or Kayfun, Russian, Fogger etc etc... and those are RTA's and most agree they have best flavor compared to most if not all RDA's.
Another thing is most (but not all maybe) are single coil, and most have less air than most dual air RDA's.
Imo, the more coils, the more air holes, = more vapor, but you get less flavor. ymmv.
PS: now that i think about it they're all RBA's lol... but Genesis in my mind is not an RTA for some reason.