In the peaks, you get used to the rocks being the grippiest part of the trail. Then you ride Cavedale and scare yourself silly. Great ride. Particularly the fast run-in as a build-up to the tricky stuff.
singletracksurfer has already given you some good ones.
I would do what we call the ’10 miles of hell’ (although we don’t really know how long it is). Start at roadside carpark at corner of Rushup Edge and Roych Clough. Go down Roych, over towards Hayfield, then turn down Coldwell Clough (there’s a cheeky ridge ride alternative here). Then over Jacob’s ladder. Then up Mam Tor and over Rushup Edge to finish in the gloriously rocky sunken track.