I have American Standart and definitely it is one of the best bowl on the market . And also BIDET TOILET SEATS are very useful fot this kind of bowl . It's a warm seat, warm water bidet. No plumbing changes needed, but you will need an electrical outlet close to the toilet. Great instructions and super easy to install. Once on, you'll never like regular toilets again! Fits on any elongated toilet, no need for a Toto toilet. Looks a little large for ours, but would look fine with any American Standard, or like quality, on up.