I break frames Jim...the new classifications aren't lame (ok not all of them). Xc frames won't do what I want them to....neither will xc forks...there are labels that need to be there in order to clear up what works for what people. Obviously the lighter a person is the better off they are. If you are a lightweight doing 5 ft drops than yeah a xc will work, but if you are 6ft 200pound landings a little rough than that same frame WILL break. Thats why there are overbuilt 'fr' ht's.