Ok, so I have a powermac g4 that I am trying to sell (and actually found someone interested in buying). If I sell it I want to buy a replacement computer for it and I have been looking at these two. I will mainly be using this for school work, internet, and for recording. the replacement computer is going to be my main computer and will be my recording studio computer. I can get a refurb powermac g5 with 2.0 ghz double processor with 2gb of ram for under 550 shipped, or I can get a mac mini core 2 duo with 2.0 ghz and 2gb ram. I already have an os x 10.5.4 cd that I can install (I bought it thinking it would work in the powermac g4) so I can install that. and I already know that the g5 will not be upgradable to os 10.6, but I dont think that would be a huge problem for me. anyway, thanks in advance for all the replies.