I used the upper body premix last Sunday after PLB and loved it. It's been the only IS that I haven't done because I'm an endurance whimp...but this was really good! I like these pre-mixes!
I've used that pre-mix, too. Isn't it great? It made me sore for days. The pre-mixes are awesome. I also like C&W cardio only premix and the cardio only from Boot Camp. Cathe is top-notch when it comes to dvd chaptering. I feel spoiled!