T.A. Barron's Merlin's Dragon is one I may consider, since it comes in between the Lost Years of Merlin and the Great Tree of Avalon series that I have. Didn't do much for me, but has a good cover, and students will certainly pick this one up.
Think I will pass on Marillier's Wildwood Dancing and Cybele's Secret. although I am tempted by books that actually use the word desmesne.
Usually love Robin McKinley's work, but Chalice was written in an odd voice.
Am working slowly on Tolkien's The Silmarillion and will give complete synopsis when I am done.