I use the textbooks quite frequently, and I have come to the conclusion that for the amount of information that you are actually able to use, the textbooks are a waste of money.
They come in handy to explain some of the points the professors don't do a good job on, but their utility is limited by several facts:
1) The instructors don't want you to know the level of detail the textbooks provide. So, using the notes they give you tends to be a more efficient use of time.
2) Many of the textbooks are good at explaining one thing and poor at explaining others. The only textbook I found to be useful at everything it explains was "Basic Histology" by Junqueria. That single book probably would've been worth the money.
3) Most of the textbooks were accessible without purchase anyway (on reserve, on the shelves, or provided for use).
Textbooks are just too darn expensive for the amount of utility you get from them. Unlike undergrad (where you may follow a textbook through from begining to end) they only reccommended reading a few chapters from each text, anyway.
Get the review books, get a good anatomy atlas, read your dissector, and use the textbooks in the library. Save your money for spring break (or get a palm pilot and download the medical dictionary).