As far as I'm concerned, there is only ONE studded snow tire for the VX. I've put a set on each of my trucks, and they are amazing. See the TOD discussion thread later for photos of some stuff that I drive through regularly with mine.

Nokian Hakkapelitta SUV, studded, size 255/60R18.

I can's possibly say enough about how great they are. During testing (of the TOD), we had a very difficult time getting them to spin, even an very hardpacked snow and frozen gravel.