Hi Stretch,
The 2nd edition seems a lot more complete than the first, and it includes a larger portion of high-yield material. It is a very large book, but it doesn't focus on minute pathology details. There is a lot of micro and physio in the book, as well. It's also pretty much in entirely outline format, so you can go through it fairly quickly.
I love the addition of full-color pictures, too. It helps to visualize a lot of these things. I think you should check it out at your school library if possible.
It's also $1 cheaper than the 1st edition!