I've used Kohler for years... Tried others and always return to Kohler.  This particular model is a classic.  There are similar designs out there, but Kohler did this one just right.  I've put this same model in several homes we've owned and recommended it to my clients.  It always impresses and looks so much better installed than any photo I've seen.  It elevates the look of any restroom.  Beyond that, you get Kohler's excellent engineering in design and function.  It flushes with determination and refills quickly.  Installation is easy -- like most any toilet install.  Nothing to say too much there except if you've installed any other toilet, this will be utterly familiar to you.  Purchase with confidence.  I was concerned about shipping since these could crack and break easily.  This particular model is heavy.  but Wayfair did an excellent job packaging the factory boxes in boxes and everything arrived perfect.  The price was great too.