You don't need to spend ^1500!
Besides, that amount would still be worth it. Faster, safer, easier to use......
And as relex said - Vista is a (poor) clone of Mac OSX. If you like Vista, you'll LOVE Mac!
PS: You can run Windows apps on a Mac with parallels or bootcamp.
its not easy but you cn even run osx on a windows machine.... like i said not easy but if you are good with computers and have the time to play around it can be done, that way best of both worlds, the editing magnificence of a mac along with the versatility of a pc... just chose which os you want to use when you boot up not ideal but it works
long and short if you have money buy a mac if you have a decent pc get vista if you have an old pc and no money stick with xp!