I see an awful lot of the cart getting in front of the horse when people want to use new computers for music.

The best way, IMO, is to get the software and hardware you want, THEN get a computer that runs it. Having the latest, greatest computer is of small consolation if the software (including ALL the plug-ins, VSTi's, utilities, etc.) and the hardware (including sound-cards, accelerator cards like UAD-1, and video cards) have to stay in the box until the dust has settled on all the driver issues, compatibility issues, 64-bit issues, etc., etc..

JMO, yada yada yada...