So I can get an old 3.2 for $3800 (NEW, edu pricing) from the apple store near me, or a new (2009) Octad 2.66. According to the stats, these machines are very comparable. I looked w/edu pricing, that the machines come out roughly even pricewise when configured as I want. The 2009 is like a couple hundred more-- $4300 vs $4500. Which is the better bet?