What books you should use depends on your teachers, on your syllabus, on your exam... but mostly on your own style
I found Guyton to be way too wordy and poorly focused, although it was great for resp.-circ.
Boron is like a physiology Bible, but it can be a total bitch to study from, because it is so incredibly detailed and in-depth. It is, however, very pedagogical, and I like the pictures!
My personal favourite so far has been Ganong's "Review of Medical Physiology". It's incredibly clear and concise, well-structured, pedagogical, gives a good overview of most things... it does sometimes presuppose some experience with studying physiology, but I don't see that as a problem. I think it's better that it focuses on the important physiological stuff and explains that clearly. After all, no matter what book you pick, you'll be reading other texts to get a better picture
Ganong also has a pretty nice section on neuro and muscles!
Another book I've had some experience with is Mader's "Understanding Human Anatomy and Physiology". It's a nice, friendly book, and could probably be a good choice for many physiology courses... but I don't think it stands too well on its own.
Finally on physiology, you might wanna check out Kaplan's physiology stuff (for USMLE step 1) when the time comes to revise
Re. biochem, we've mostly used the aptly named "Medical Biochemistry" by Baynes and Dominiczak. It's all right, but I've found most medical biochem books to be very similar in terms of awesomeness (possibly because biochem isn't really my thing).
good luck!