My advice to everyone: Snap On dual 80 was arguably revolutionary. It was a fine toothed ratchet, but as strong as a breaker bar. Back drag was low due to the fine teeth. Dual 80 quickly became a favorite among pros and wanna bes like me. Tho others have copied the design or concept, Snap Zons dual 80 remains an industry leader.
But less often discussed, the chief advantages of the dual 80 design, strength and high tooth count, provide increased utility especially for longer ratchets. Std length or short ratchets don’t benefit as much from high tooth count (for swing room, tho hi tooth count can reduce back drag).
My advice: if you are looking for premium grade ratchets, choose the long (flex) models where you will get real performance benefits you can actually use. For std length ratchets, I’d advise choosing lowest back drag, light weight handles and shapes that you like or fit your hand. Fine toothed round heads can be good choices.
Few more tips: I think of my ratchets as removal ratchets (long, strong, eg SHLF80A, FHLF80) , re-installation (short low back drag, e.g. FK80, T72 with 3/8“ anvil, an old, worn out F80), precision ratchets (long fixed head for front engine jobs, timing belts, eg FLL80, TLL72)
If you take my advice, you will end up with expensive long ratchets, and cheaper short ratchets with few std sizes in between. I advise against spending big money on std length ratchets