Trading up for Tyrus Thomas has to be the worst idea I've ever heard, not only will he still be available at #6, he will also be a bad pick even then.
The player to draft is whichever one of the following 5 is still available at #6:
1. LaMarcus Aldridge
2. Andrea Bargnani
3. Adam Morrison
4. Rudy Gay
5. Brandon Roy
Any of those and I'm happy, if none of them are available we might have to settle for Patrick O'Bryant or Tyrus Thomas.