Ol16 is my suggested atty then but I think they have stopped producing them.Sold it today.
Its more aimed at Restrictes lung hits and i prefer DL.
I have tried 22mm atties on reos but never enjoyed them.
I have only enjoyed 16mm atties on single 18650 mods.
I find I need a denser/warmer vape and throwing any fancy build in an atty has too slow ramp up.
The 16mm atties can use plain wire and still produce a lovely warm vape instantly.