I wanted to replace the toilet in my master bath for 2 reasons: 1) it would splash out when it flushed, yuck and 2) it wouldn't clean the bowl when flushing, the water didn't hit all parts of the bowl, which meant having to clean it ALL the time, also yuck.  Thought one piece would be easier to clean with less nooks and crannies and less places it could leak. I'm very happy with the installation and the look. I haven't had trouble with it NOT flushing the first time...yet. I am EXTREMELY disappointed because it doesn't clean the bowl (one of the big reasons I replaced the old one!). I have never owned an American Standard, and maybe they're all pretty much the same with the low flow feature, but I don't think so. I will not purchase another American Standard. In fact, if I'm able to renovate the master bath in the next 3-4 years, I will replace THIS toilet as well.