As a new owner of a Gerber Ultra Flush toilet I am really very pleased with it's performance.
Not sure if you've read my post ("Lost an old friend tonite...") but my Wife runs a daycare out of our home and several of the children has an issue with flushing (they just don't), so ,after 2-3 of these children use the toilet, I am left with quite a full bowl.
The Gerber handles it without any problems what-so-ever.I am really amazed it does so with using only 1.6 gallons.
The best part is the water spot...it is huge compared to most of the new toilets (10 1/2" x 12 1/2"), I have yet to use a toilet brush even after the toilet has beeen used by several children.
My friend has the PA Cadet and he likes his as well, so besides the smaller water spot (by 1/2"), and the gram test (1000 grams on the Gerber-750 on the AS Cadet), I'd say go for whatever toilet you visually like best as they are just about even in cost.