Sorry, I know this is probably a really dumb question and everyone knows the answer but me, but I've searched and can't find it. What is the difference between the different grades of maple? Sites always say low figure/high figure or AA/AAAA, etc. But what does this mean? Does more figure mean more 'lines' on a flamed top, and bigger 'waves' on quilted tops? I'm confused. Could somebody please post pics and/or explain the difference to me? I want to do a maple top on a guitar, but don't know what kind to get....they all look pretty much the same to me. Thanks, and pardon my stupidity.