Amen, brother. I use notes to make sense of stats. I make notes of any non-standard play I find, like check-raise bluffs and such. If you don't use PAHUD, you should always go to the hand history and see the mucked cards to make notes. Sometimes you'll be surprised to find that a TAG capped PF w/A4s or 87s, and you were way ahead the whole time with your TT.

But I only play 2-3 tables usually.