4/5 stars because my wife wasn't as interested in the the "upgrade" and didn't find the seat to be as comfortable as the original.  I haven't found it to be uncomfortable, but it is quite different.

Installation was pretty easy, took me a bit longer as I had a rigid pipe with a compression fitting rather than a threaded hose on both ends of the water supply.  So I had to cut the supply pipe shorter and rustle up a new compression fitting to slide over it (luckily I had one from a previous project).  I also had planned ahead and had a dedicated outlet put in as the house was being built.

I'm pretty happy with how everything works, this is my first experience with this type of product.  The default spray settings were dead on in my case and I was pleasantly surprised by not being shot with any cold water.  Still working out the drying details, the blow dryer takes a while, toilet paper is the goto, but might try a cloth to save a tree.