I have a powerbook, and became a mac fan. It was a good reason to switch away from Windows XP. Now I have a Mac Pro and I love it. I've upgraded the system with a 320gb and 750gb hdd from seagate, and 4 more GB. (yes, I did not buy it from apple.com obviously). It's a great system, I utterly love it. It's a shame it does not have bluetooth, wifi and isight, but .. I can live without that. I got a small usb dongle for bluetooth and simply use ethernet (it's not like I am moving the mac pro around all the time anyway). And I can always get a usb camera of course. It's a great performing, stunning looking machine. If only Apple would make new 24" cinema displays like the iMac ones. And my system is complete.