"That is a matter of opinnion. Most of the virus that are comming out exploit XP and not 9X. Also I see XP machines crash all the time."
XP with SP2 and the latest security patches is far more secure than 9x ever could have been. Also if you have problems with XP machines crashing then you either installed it wrong or have a piece of software your trying to run that has sloppy code. You can look all over the net and find the reviews that support that it has been proven over and over again in several tests.
I managed to download the corporate version of SP2 (266mb or something, as opposed to the normal 66mb), and have experienced none of the horrors people speak of when it comes to SP2. It was a bittorrent file, but the link has long since been removed.