Does anybody here always stay up to date with each mac pro / Powermac refresh? I sold my Dual 2.7ghz G5 at the beginning of this year, and bought the base line Octo-Core Mac Pro with the money. But after reading about Nehalem, I think I would like to upgrade early this time and sell my current Mac Pro on the day the new Nehalem ones come out. About how much of a hit do you take selling a last gen model to get the newest refresh? Anybody else do this with the last couple Mac Pros? How did it work out? I get a corporate discount with Apple so that should reduce the hit of upgrading for me a bit. (since I paid less in the first place for my old one and the new one I should be able to get a little cheaper too). What do you guys think? Should I keep it? or will Nehalem be worth taking a hit in the wallet?