I so wish that I could have written a positive review on this toilet because it is beautiful.  We've had it for 6 months and finally decided to replace it with a big box store toilet that isn't as pretty but more functional.  Our main issue was the efficiency of flushing.  Had to flush 2-3 times for completeness.  Wrote to the company's customer service and received a reply--tried everything they suggested and then stopped getting return emails from them. Have installed other water saving toilets without the same problems.  The other thing is that it is a low toilet--that was our fault for not noticing when we purchased it.  We are tall and it's difficult getting up from sitting.