Vista got worse now than back in 2006 when I tried the Beta2 release. Home Premium makes me more unproductive. XP Professional supports some features I will need. I may lose DVD maker and making HD videos but I am ok without making HD or 16:9 videos untill I get another system. I will also get a preformance gain.
PS: The XP copy is retail. If my PC fails, I can send it in and reinstall it with XP professional.
Worth the downgrade?