First is... do you think that the eMacs with 1.25 GHz and 768 MB memory (getting a 512 MB stick from crucial) will be fast enough to do what John Mayer was doing at Macworld San Francisco when he was soloing over the song he made? Thats what I'm looking foward to doing most on my Mac, so I'm just asking if it will work smoothly. Second, does the apple store put tax on things, even if you don't live in California? If so, how much is it? Thanks for your help.