I bought one of these about 3 months ago. I was a little apprehensive about it at first. Not gonna lie the metal adaptor to attach to the tank is not the easiest thing in the world to get on one of those plastic nipples - I cross threaded two of those things before finally getting it installed properly. 
I'm glad I stuck with it though. The joy of having a sparkling clean hiney is unmatched. I no longer go in public because the experience is not like the one I have at home.
Night light feature is very unobtrusive and puts out a soft glow, not something blaring or harsh that will wake you up fully during a midnight bathroom trip.
Overall very satisfied - ordered additional units for my other bathrooms.