We like the Biobidet 1000 and 600
A notch below that, but with continuous heating, the Clean Sense DIB-1500
Any of the Toto toilets mentioned work very well.
My GF loves the Aquia look, the skirted bowl is very nice she says.
I've been selling a lot of the Drake II and Ultramax II toilets too.
It's a tough choice.
Sometimes, I change toilets just for fun.