Try Cathe! Go to
www.cathe.com and check out her workouts. The site has great clips and if you like strength training, you'll LOVE Cathe!
Take a look at Powerhour, Slow and Heavy, Maximum Intensity Strength and Pure Strength. I'm waiting for my new DVD's to arrive, Upper and Lower Body Pyramid from the Intensity series that just came out.
I use the Firm sometimes myself but I rarely, if ever, do any of their cardio anymore, or anyone else's for that matter.