I have been looking at my new X-Mas Homespun Tape catalog and I am considering a video on flatpicking. My concern is that some great guitarists are not always great teachers. There are tapes by Russ Barenberg, David Grier, Norman Blake, Dan Crary and Steve Kaufman. Has anyone used one of these tapes and if so, any comments on the overall quality, presentation of information,etc...? Thank you for any comments. Tom