Which brands have you used? You quite possibly have tried this already, but I really like Crest VividWhite. I originally got it because of the taste (

), but have fallen in love with it! It gives my mouth a fresh, clean feeling for hours, and at the end of the day, no "fuzzy slipper" feeling on my teeth.
They have a similar paste, called VividWhite Night, which I haven't tried, but I don't think you would find it to your liking....apparently the paste leaves some sort of whitening coat on your teeth that you brush off in the morning
Damon 2's top and bottom, BRACED 02/22/04 and REMOVED 08/29/05. Now in bonded retainers (top and bottom) :4 wisdom teeth surgically removed on 12/22/05: