I'm also happy they did because I had a can of "Cotton" sitting here and I used it on my hallway yesterday. This was a much better experience :) The best part of all was that I managed to do the whole thing in a single coat! I honestly don't think I've ever painted anything with a single coat.

It doesn't look like too much of a change in the photos but we went from a dirty greeny yellow to a lovely soft very pale sort of grey/white which looks much cleaner and less sickly.
Anyway, despite the previous bad paint I'm a pretty happy customer :)