Cheryl - When in doubt, buy it!!!!!
I happen to like Bryan Kest........he does talk a lot, but sometimes I think you need it with him while he's torturing you! I recently did an audio practice of his - Slow & Deep practice that had a 10 minute hold on a forward bend........no exaggeration. He said your legs would start going numb, but to fight thru it. I never held one that long!
I tend to like a large variety of instructors. Of course, my favorite yoga instructors are Shiva, Eion & Rainbeau Mars. I do Baron Baptiste, but don't really care for him. I do a lot of instructors that I don't really like, but I find I need the variety in both my yoga practice and regular fitness regimen!
One person I do like very much is Barry from Barry's Bootcamp. He's a bit odd.....but I've always been attracted to different people with eccentric personalities. Barry pushes hard and he's tough, but he sort of has this evil laugh! I just think he's charming in a bizzare, odd way. Charismatic....I guess. I guess that's why it IS Barry's Bootcamp. I wish he led more than the 2 of the series, although the other instructors are okay, he's my favorite! It takes a great deal to get my abs sore these days........but my abs got worked from this series.......and it's not endless sets either!