Belated tysm! Red Shift is on my list just b/c of its relation to Tam Lin, also because it was covered on the Backlisted podcast, as was Pamela Dean's Tam Lin, which mentioned that episode, and I'd prefer to read the thing before listening to people talk about the thing. Anyway I was already considering it before The Owl Service, so I suppose now there's no excuse. The rest are all really welcome starting places, especially

Really good descriptions of snow / stone!

because I'm a sucker for that sort of detail, so I particularly appreciate you pointing it out.