I wouldn't recommend Sharon Mann. She has a daily workout show here in Toronto (she's a fellow Canuck). I find her workouts boring, her sets darkly lit and kinda antiseptic, and she has these "Firm-like" background exercisers with frozen, unnatural smiles on their faces -- not that you can ever see them in the dark. I did a few of them before I got into fitness videos and was saying to myself "Is that all there is? When will this end? (And if I see one more Bulova watch commercial, I'll scream!)" The shows I've seen always have them exercising on raised, carpeted pillar-like thangs.
Sharon's TV workouts seem more geared toward the beginner. If you're used to Cathe, Sharon would bore you to tears.
Just my 2 cents!
Patricia