If you're not the most extreme wrencher and are only buying one manual, buy the Haynes. It has more detailed explainations of many things hardly explained in the shop manual. The pictures are a big help as well. There should be no appreciatable differences from the 05 to 08. The 865 engine stuff is the same, the only difference might be the counter sprocket size. Of course, my sprocket has been the same as the new ones since long before I bought the book.
I have both manuals and wouldn't do without either. I don't do the real serious stuff, but both have been a big help already and I'm learning more all the time.
