I am remodeling 3 bathrooms and have been investigating toilets. I definitely want Toto toilets. My contractor can get me Toto commercial toilets - model CST 704 (gravity fed). My other option is to purchase residential toilets - either Drake (w/ G-Max flushing system) or Promenade (gravity fed). I have two questions - what is the quality of the commercial CST 704 vs the residential systems? For appearance I really prefer the Promade toilet - any thoughts on Promenade vs my other two choices?