I'm running a Macbook. I also run a Compaq V2570NR laptop with XP and an elderly Dell with XP. I've only had the Macbook for 3 months but my impressions so far.... All the software for Mac works flawlessly and doesn't crash the Mac. The only problem so far was the driver for an HP scanner/printer/copier which just plain did not work. I can print but not scan. My Epson (the one I want to dispose of) works flawlessly as a copier with my Mac. This is HP's crappy programming that's at fault. I haven't got multiple Macs so I can't see whether I get the same results from a variety of Mac machines that I get from a variety of WIndows XP machines where one program will work on one system but not on any of the others - even systems supposedly identical. My mac has not slowed down. My WIndows machines are forever slowing down. In fact I removed all the stuff from the one that was slowing it and it still does not run as fast as it once did. I blame the Microsoft updates for adding too much overhead and the antivirus software for this. My Mac does not need antivirus software. If software is installed from the web or email it will ask if I wish to run this software before I can. It needs a password for software that tries to install itself into the system. My Compaq crawls badly when the disk nears 75% full. My Macbook hasn't slowed down yet but the drive is much larger. My wife's XP machine lost her user account then after that was fixed, locked up totally and refuses to even complete booting. I've seen other equally horrible problems with windows. I'm currently waiting for a 2.5" to USB connector so that I can rescue her data and then reformat/reinstall her laptop. The controls on a Mac are pretty intuitive and to be quite honest although it takes time to get used to it all, I do prefer my Mac to Windows systems. After using Leopard, XP just seems so 1970's Star Trek clunky.