Hello everyone ... I am a music composer who is currently using a p4 1.0g along with acid 4.0 and cubase sx. I have been considering a mac for a very long time but I'm not exactly sure what the benefits are. I've been searching the web for a while and it is hard to find good solid advice. Anyone out there work with audio and midi seriously that can give me some direction as far as what to buy. .... right now I am looking to add DP 4 and a lexicon omega to any mac system. I'd like my setup to be fairly mobile. Cost is also somewhat of a factor. I would use it 95% of the time for working with audio and midi.