Hello Dan,
I enjoyed your videos and am impressed by your seeming equal fluency with both right hand techniques. The sound of the viheuela and lute are quite different, so I wouldn't say I could make a judgement about differences in the sound of both techniques. But, as I say, when I try both on my instrument, I hear distinct differences. Perhaps if I were to put in 5 hours per day I would more quickly achieve a thumb under technique! Congratulations on such dedication. Ned -- To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html