Capital and learning about dialectical materialism

[BIXX]

I am going to start on Capital sometime soon, I was wondering if there were any specific editions you consider to be the best?

Also, what books would you recommend on dialectical materialism? I assume Capital will cover it pretty well, but I just wanted to see what you all think.

[Brutus]

Socialism: Utopian and Scientific by Engels handles dialectics. I'm not sure if capital does, though.

[Yet_Another_Boring_Marxist]

Personally, I think Mao's On Contradiction is the best introduction to dialectics out there.

[Point Blank]

I haven't personally read it (although I plan on doing it), but I've heard many people recommending Bertell Ollman's Dance of the Dialectic.