I have two Ronnie Coleman videos "The Unbelievable" and "Redemption"
Definately get The Unbelievable. He actually explains what he does, why he does it, what he eats, why he eats it, etc. You also get to see him at his job, and he tells a few cool anecdotes. For me, I like it when the guy actually talks. I don't want to see some video where he just lifts. In Redemption, he talks a little, but much less. It's basically watching him lift and eat.
It depends on which style you like. If you don't care bout commentary, and want to see lifts, go with Redemption. If you want some nice commentary by Big Ronnie, with some variety, go get Unbelievable.