There are sooooooooooo many TOTO dealers in the San Francisco area.
And parts are easier for TOTO then for the American Standard. I can carry one flapper and one fill valve and fix most anything TOTO.
The Drake II is a good 1.28 model.
If you want pressure assist, there is the Kohler Highline with Flushmate. (not to be confused with the gravity Highline)
If you want to install something that will flush anything, there is the Caroma line with their 3" trapway.
Perhaps 1% of the population needs something this large, and those are normally people on medication.