The toilet was routine to install. American Standard has a great video. The dual flush works great. You do have to hold the low flush button for a full 2 seconds like some reviewers complained. I think I can handle that. I was afraid the dual flush would complicate the install, but it didn't. The directions weren't clear about the 2 adjustment mechanisms - which one did what. I didn't take points off for that since I didn't need to adjust them.

DO NOT BUY AMERICAN STANDARD. I bought this toilet and installed yesterday it. The toilet constantly starts to flush by itself. Worst product ever and calling customer service is not any better. Their solution is to send me a bunch of parts that I get to install. NEVER AGAIN WILL I BUY ANY PRODUCT BY AMERICAN STANDARD!!!!!!!!!!!!!!!!!!!!!!!