Theres a couple of reasons I would choose Pro over Home. First Pro has a much more in depth UI as far as the admin options go. There is more control over the computer. I have a dual core so i use pro because home does not support it. Just think of XP Pro as a buffed up version on Home which has a lot more perks. I've been using XP Pro from the time it came out. I tried Home but did not like the feel to it. It was very noticeable that it was missing a few things while configuring it after a fresh install. Media editions wasn't all that great either. All in all I'll go with XP Pro for it is a more secure and has very powerful admin tools.