The Reload S aside, which I believe will be right up your alley, you might want to take a look at the Wasp Nano.
It's tiny and has only a small juicewell, but it has plenty of airflow and produces very, very good flavor and cloud density. Play a little with coil height, or you may encounter whistling. I like it as a dripper as well as squonker.
For 10 bucks worth every single penny imo.
Although not my absolute favorite when it comes down to flavor, the Recurve is very nice as well. Don't get me wrong, the flavor is definetively above average, but its biggest pro is the the airflow imo. It's the smoothes and most quiet of all the atties on this list. Very enjoyable.
The juicewell is literally non-existant, but it absolutely shines in squonk mode, because you can squonk almost up to the top of the coil without leaking.
The Entheon is still one of my favorite single coil RDAs.
Good flavor and density, but it's slightly more restrictive than the former three, although far from MTL. Very squonk friendly as well. The included proprietary driptips are garbage because they're way too short imo, but the original OBS Engine RTA driptip with the included 510 adapter is a perfect match for example.
Good clones available too.
You might try the Oumier VLS with a single horizontal coil. Placed slightly higher than the lower 2 airflowholes, I enjoy it even more than the vertical setups.
I hate the NarCa, NarDa and such with passion. Overhyped junk imo. Ymmv.