COmmercial flush system (which require usually at least a 1" water supply to the toilet), just aren't practical for most homes. The noise from flushing them wouldn't be particularly appreciated in the middle of the night right next to the bedroom. FWIW, when you compare street prices, the Toto toilets are often on par with similar toilets. Yes, they do have some highly styled ones that can cost an arm and a leg, but they have some very nice looking, well-made ones that are very reasonable. I've never particularly liked a pressure assisted toilet, and they can just plain scare little children, IF they can even overcome the sticky old valve flush lever on the things to flush it.