I've got XP on my other Macs but I've got a new MBP 2.4 coming the end of the week or next. I'm putting 4GB RAM on it. Am I best off buying another copy of XP oem or should I go Vista Home oem? I didn't go Vista previous b/c it was so new and I was scared of compatibility and driver issues. Is that still a concern? I can get Vista for $20 less than XP, so I'd love to save if it's not going to end up kicking me in the face later on.