I've seen Megadeth five times and the RIP tour was the best, because it was mostly songs that weren't played the other four times I've seen them. If Dave doesn't want to do all of Peace Sells, I guess that's fine, but change up your set or play more than two songs from Peace Sells. I mean, Jesus, I've only seen Wake Up Dead, Peace Sells, and Devils Island, whereas I've seen FIVE songs from UA. Not good.
9/20 - Overkill or Nik Turner (or both!)
9/23 - King Crimson