I installed Totos in our house over 10 years ago and just last week had to replace the fill valve in one of them as it was getting noisy. That's $25 in maintenance over 10 years, which is damn cheap.

The only bitch I have about the Toto toilets is that their designers are so hellbent on saving water, that they designed the water footprint in the bowl to be smaller than I'd prefer. Gotta keep a toilet brush handy. Maybe their new cyclone flush toilet would make that unnecessary? Other than that, it works pretty well.