In reply to mugglewump:
Castell Helen - Atlantis/True Moments/Freebird although pitches are probably HVS/E2/E1
North West Passage is also phenominal at E1
Upper Tier - The Strand is an obvious choice
Wen Zawn - Toiler in the Sea
Not done the following, but based on friends reviews would also be worth a look - Resolution Direct, Quartz Icicle, Flytrap (hard and slightly esoteric)
Mousetrap and Red Wall are obviously famous, but I can'g comment
Bran Flake on Holyhead mountain if the above all get a bit much