I'm setting up a composing/recording setup for home. It'll be built around Digital Performer or the new Logic when it comes out, and I'll be using a lot of virtual instruments. I can get a good deal on slightly used core duo 2.16 imacs now ($1k for a 20" or $1300 for a 24") or I'm wondering if I should wait for the new generation that will be out in a few months. Can the current ones give me the horsepower I need, or should I wait? Thoughts? Thanks all!