I bought the entry-level Trek 820 just about 3 months ago and love it. It's their only steel frame ummmm hardtail (?) and it handled pretty much every thing I threw at him. Actually, he handled more then I, the rider, did!
I know you said 6700 but I'll Always put a vote in for Trek!
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"