That the Flowise has disappeared for now is recent. Too bad.
I think the Cadet line overall is fine. Same for Champion and any Kohler like the Highline and Cimarron.
The AS Champion will flush equally. My complaint about the Champion is the flush tower vs nice simple easy to replace 3" universal flapper.
The Champion flush tower should be a good unit by now (they redesigned it quite a few times since the original series).
Toto Entrada might be a touch cheaper but has a puny-looking tank, but, even fussy people, if they keep the seat lid up, don't care about how the tank looks.
For any others you may consider, be sure to check MaP toilet performance testing site and stick with 1,000 grams flush performance.
Always check the fixture for imperfections before leaving any store.