In reply to Jim Fraser:
1. What sort of routes/grades are you looking for?
2. Have you looked in the SMC guidebook 'Northern Highlands Central'? Sgurr na Lapaich has a few routes? The SMC website archive also includes some routes in the area.
3. The Affric hills seem to get quite a lot of snow, and hold it well. As 'traffic' is significantly less than in other areas, even if a path is marked on the map there may be a lot of trail breaking required.
4. A bike can help with the distances, assuming the snow isn't lying in the bottom of the glen.
5. Allt a Choire Chruim when frozen gives 100m of grade II,3, similar to a shorter version of Sergeant's Gully on Snowdon.
6. If there is a good hard freeze there are a number of waterfalls around Cannich/Tomich.