We are very pleased with our Slim Two.  Never having used a bidet before we really didn't know what to expect.  We wish that the remote had a little better description of how to use/or what to expect of the selections. My wife gave it 4 stars because she thought it just a tad confusing but I give it a 5. All in all I guess that it comes down to a learning experience.  With the thicker seat it is probably best to use it (the bidet) on a regular height toilet. Ours is a taller, handicap toilet and it makes it a little tall to sit on. Oh yes, BTW, It is late December now and we never use the heated seat which really is a waste of money.