I found Peter's DVD to be far superior to the Lydia Kavina videotape. I personally found the hand and finger positions of her method to be awkward, and I couldn't figure out exactly how I was supposed to be moving my hand for vibrato or just how fast. Peter's DVD makes it all much clearer, and I find the hand and finger positions he uses to be much more comfortable.
He does not, however, recommend any specific exercises other than playing along with music you like. (He doesn't say not to do other exercises, he just doesn't specify any.) Clara Rockmore's exercises in her book seem like excellent formal exercises to do with Peter's techniques in my opinion.
He does not, however, recommend any specific exercises other than playing along with music you like. (He doesn't say not to do other exercises, he just doesn't specify any.) Clara Rockmore's exercises in her book seem like excellent formal exercises to do with Peter's techniques in my opinion.