I may have to upgrade to this also as Vista is just the worst OS i have ever had the displeasure to have to use day-to-day!
Thing is, i think having to pay £140 for a disk is insane... but Vista is that bad it might need to be done!
If Vista crashes so much for you, it's probably due to bad drivers for your hardware... You should try to upgrade your drivers, especially the graphics card one.
Vista per se is not unstable at all, in fact I have never seen it crash. There must be something else causing your crashes.
My Mario Kart Wii friend code: 2707-1866-0957