Read the seventh edition. I thought it was well written and well laid out, though my professor pretty much just taught everything that the book had to say, so I wasn't really learning much directly from the book (though I'm sure this is where she got her information). I enjoyed it, I guess. XD
I will say that we used a different book for Origin, Insertion, Action, and Innervation as this book contradicted other sources.
I read the sixth edition. This was well laid out and easy to follow. It does put a lot of information in the chapters but that feels expected with the subject matter.
There is an average of 15 review questions at the end of each chapter and they are well thought and and cannot necessarily be answered without reading the chapter.
There is some inconsistencies with how things are described but nothing that causes confusion.