Which Toto to buy? MS604114CEFG-01 Ultramax II? MS854114SL-01? Other?

Can you give me advice on which Toto to buy? I want the most trouble free and best flushing.

I have narrowed it down to the following two unless someone advises a different model is better:

TOTO MS604114CEFG-01 Ultramax II Het Double Cyclone One Piece Toilet with CEFIONTECT, Cotton White 1.28 GPF

versus TOTO MS854114SL-01 Ultramax ADA One Piece Toilet, Cotton White 1.6 GPF

I sell a lot more of the MS604114CEFG
It's 3/8" shorter, but comes standard with CEFIONTECT, doucle cyclone rinse, and is priced better.
With TOTO, E=1.28 gallons, S=1.6 gallons.
If you feel the need for more water with either bowl, just hold the handle down instead of allowing it to flip right back up.