It has only been a week but I am very happy with the performance of this Eco Drake toilet. No problem with bowl cleaning. If it is going to leave streaks, it doesn't look like it will happen very often. If I did not buy this, I would have bought the CST454CEFG Drake II with Tornado Flush. I realize that should have a little better bowl rinse, but it would have cost me over $250.00 more than this did and I preferred to not have the Cefiontect glaze.
This does everything I need and even though it does not have Sanigloss or Cefiontect glaze, the bowl stays much cleaner than the toilet it replaced. Very easy to keep clean. I looked forward to the additional height but to be honest, it is taking a little getting used because it is a couple of inches higher than the one it replaced and it is a noticeable difference. It does make it easier to get up which is what I wanted since I noticed it was getting harder to get up off the previous one.