Replying to Campings Spots

So I'm looking for a really dope place to camp in the greater Denver area (few hours drive in any direction) and I figured I might as well ask NS.

Dream list:

Secluded

Near a fishable river

Cliffs to jump off

Not an established campground (can't stand RV's or the people in them)

Anyone have a really great spot they wouldn't mind sharing? I figure the Key/Breck/Silverthorne/Dillon/A-BayWhatever area would be the best bet.