I was just "talking toilets" with my plumber yesterday as he was installing a builder grade toilet in the apartments I manage.
Plumber has the Toto Drake in his new home. Two years ago, I had two ADA Toto Drakes installed in my beach home. We love them.
Pros: --Toto Drake has a 3inch trap; most toilets have a 2" even the more expensive Kohlers;
--Flush quickly (this can be a little scary the first copy of times--I think it could flush down an elephant but I wouldn't recommend it
--Efficient on the water
Cons--expensive
--some folks have complained about the difficulty in plunging a Toto; Then again these toilets were not made to have to plunge.
Advice--Upgrade to the softclose toilet seat; go with the elongated seat (japanese "bottoms" must be smaller than american's)
BTW--my plumber said he would not buy a Kohler...unless he had lots of money to waste.