In reply to andy moles:
Poca Buidhe, near Baosbheinn and Beinn an Eoin in the Flowerdale forest.
Bearnais near Lurg Mhor and Bidean a' Choire Sheasgaich.
Sourlies for Sgurr na Ciche and the eastern Knoydart peaks.
Glenbeg for Beinn Dearg and the nearby hills.
As has already been mentioned here, Camban bothy is a wonderfully situated bothy surrounded by big peaks all of which really move up a gear in the winter. Coiremor and Magoo's bothys are also wonderfully remote, very comfortable and situated below the wonderful soaring and sharp Creag an Duine ridge. There are many long winter lines in the stunning Luchd Coire under the summit of Seana Bhraigh.