Here are some links to the most popular ones:
Dual Coil
Drop Dead: Hellvape Drop Dead RDA (Piano Full Black) - US at DashVapes.com
Dead Rabbit: Hellvape Dead Rabbit 24mm RDA (Black) - US at DashVapes.com
Drop: Looks soldout
Single Coil
Wasp (I would get at least this if you're not getting a single coil, probably best thing to learn on): Oumier Wasp Nano RDA (Black) - US at DashVapes.com
Recurve (this would be my #1 suggestion): Wotofo Recurve RDA (Black) - US at DashVapes.com
Profile: Wotofo Profile RDA (Stainless Steel) - US at DashVapes.com
I have a drop, dead rabbit, and dead drop (and others).
Drop is the most airy one, and my least favourite. Dead rabbit is better for squonking, IMO, because you can squonk and let the juice complete submerse your coils. The Drop makes you wet the wicks at the bottom and it draws up to the coil. The Drop Dead is my favourite out of the 3. You can almost submerse the coil, but it has the best quality of life features (like the top cap being locked, airflow being easily adjustable).
I also have the Wasp, Recurve, Drop Solo (and others).
I would recommend a recurve. It's probably the best overall on the list. You can save on battery life and get better flavour. And it will make more than enough clouds. Like a lot of clouds. If you don't get it, I would at least get the wasp. It's super cheap ($20) and probably the best thing to practice on.