Mark-
Keep us posted on what you decide on. I'm trying to figure out who to go to as well. Your write-up echoed alot of my problems. Over 45 minutes, and it locks up bad. My body has alot of wear and tear to it also. Ran competitively in high school, collegiately x-c,indoor,outdoor, telemark skied 700+ days over the past 5 winters. I think it finally caught up to me.
I'm reading they both have different methods, both have treated elite athletes (Meyers seems to have more), and both their success rates seem good. Cattey gave me a good impression.
Anyways, best of luck!