I'm heading up here in May/June, so watch this space.
A unique area in that the finest hills really are the lower ones and not the (few) Munros (even a lost cause of a bagger like me says this.) Suilven, Stac Pollaidh, Quinag, Cul Mor, Foinaven - one extraordinary hill after another rears up out of the ground as one heads N from Ullapool.