The problem with K & C is that, while really interesting and generally fantastic (I love diagnosing myself with stuff), there will probably be a new edition between now and your clinics, when you'll really need it. And there is apparently quite a lot of content added and updated between then. That said, I'm still a little tempted!
I didn't buy anything and I'm glad I didn't. A friend got screwed over because he bought all the starred books on his list, and only used a couple of them all year. Generally speaking, an anatomy book you get on well with is a good investment, as are Netter's flashcards.