well, my old saddle was about 430gs (laser v). As far as railed saddles go, it was one of the lightest I could find, and it happened to be on sale. Also, as a DHer/FRer, I spend very little time in the saddle. Its only there to protect from butt punctures of a botched jump or something
Check out price point though, they have some great deals.
ps, I have my old saddle if you want to by it. Its soft and in pretty good shape.