now I find that the slower I come up the better I feel afterwards, regardless of whether is air or Nitrox.
Which has a good grounding in theory, bubble formation isnt as rapid, offgassing is more controlled and what is thought to be sub clinical DCS symptoms would be less all due to a more controlled ascent rate.
The nitrox makes you feel better argument has never been proven in any study attempted and the placebo effect could well kick in. Some swear it does, some swear it doesnt and scientifically its very hard to test "fatigue" quantitatively.