Ive had to revise my original review now that Ive had the toilet for about 7 months. I have a very narrow master bathroom, which is why I chose this model.  When we started remodeling the hall bathroom, this toilet was the only one our family had to use. Within a few days, I discovered that it was leaking at the base. Initially, the plumber thought it was because my husband installed it with a waxless ring.  After over an hour, he finally came out and said that we have an 11 rough in.  Normally, a 12 rough in toilet would be able to work, and thats what we had previously, but he said we would have to find a toilet for a 10 rough in.  His recommendation was to stay away from the one piece models with the slim tank because of our odd rough in.  So, I now have a toilet that cost over 300 and cant be used.