In reply to islandlynx:
All have their merits but by process of elimination, discount range west due to limited access, the North due to it not being as good as the south then discount Stackpole and Lydstep because Penally isn't all that great then choose from the remaining two. Tough decision. Remember all the discounted areas are still covered by the greatest hits books and not as good as south Pembroke is still very good.
The correct answer of course is to buy the set, the cc offers deals on the big 3 and all 5.