I have both Pyramid Upper & Lower, and Slow & Heavy. Both dvd's helped me define my muscles even though I lift heavy with a selectorized plate weight home gym also. Free weights just add another demention to lifting that's so beneficial. Pyramid Upper is very effective because you increase your weight selection for each set, then work back down decreasing the weight. It really makes you work hard and I've found I've had to decrease my weight towards the end of some sets.
Slow & Heavy allows me to lift HEAVY. It makes a big difference to move slow and control the weight, form is everything in this dvd, but it really digs into every last muscle fiber I have. I can't say which I like better for upper body work, so I'm really glad I have both.