While recently looking through a Musiciansfriend catalog, I noticed that certain guitars were described as having a "C," "U," or "V" shaped neck. What are the differences? I know I did a bad thing by looking at guitars,(sorry) but, I know basses have different shape necks as well. Also, what is a quarter sawn neck? I know a reasonable amount about guitar and bass construction, but, I can't fake knowing about this stuff. Thanks in advance, Mike J.