I didn't enjoy The Winter Prince as much, and I think it had to do with three things: one, that it was a first novel, and felt a little disjointed to me at times; two, I'd already read Wein's later novels, and of course this one hadn't yet reached that level of accomplishment; and three, knowing the story of Mordred/Medraut, I could guess that he wasn't going to achieve his main goal, or what he thought was his main goal. He did achieve a goal, and a good one, after a sequence that reminded me, again, of Dorothy Dunnett, a bit in the last section of The Game of Kings. The author's notes say The Winter Prince was composed over a long period; I think that made it more episodic, and is why I didn't get swept along like I have with her other novels. It was still quite good. I suspect I would have liked it even more had I not read her very superior The Sunbird first.
Anyway, I recommend these books.