When my home studio opened in 2000 i was running a pentium 3 1 ghz system with 512mb ram and a 60-gig hd. In 2002 i updated to XP and had no problems from then on. I was using cubase sx on pc and was having very little problems maybe 1 crash every 2 months. The main problem was speed... wasn't able to run many tracks with the plugins I had. So this Oct. I purchased a brand new dual2.0ghz g5 with 512mb ram and a 160-gig hd. I purchased motu Digital Performer 4 and the g5 came with panther. Now in January I'm beginning to regret this decision. First of all i must say OSX is flawless. It's a pleasure to work with everyday. Now on the hardware side. The speed is very good but I'm an audio engineer and obviously the control room must be as quiet as possible. The system itself...pretty silent. Now the crunching squeaking and chirping that is coming out of my speakers and headphones is far form silent. My clients complain almost everytime about the noise that is coming from their headphones in between takes. Digital Performer is awful. I have never used a program that loves to randomly quit to often. My recommendation for any audio engineer or musician/engineer stay away from the first generation g5' and digital performer. The combination of the two has all but ruined my mac experience.