Can anyone recommend the best DVD from Cathe? I have read alot of pros and cons on the STS, I want to try some other DVD's before I spend the $299+. I don't need anything cardio as I have that covered with cycling, swimming and walking. I have a really bad knee and can't do any jumping, plyo or step. I can do any of the weights. I also would like a great core workout. I have dumbbells, bar, ball and band but no incline or squat rack. Also upper bod workout. Thanks for any help/suggestions you can offer.