CWP and MM back to back, in my experience:
The CPig has a fuller, more grinding mid range, its quite a bit hotter and bigger sounding. It arguably has more low end, but I dont think theres that much in it, its probably just that its driving the amp that much harder.
MM: Sweeter high end adn quite a bit more of it, less compressed, more scooped mids and smoother sound, but with a fat low midrange.
To sum up the vibes as I see them, the C-Pig is clinically precise brutality, the MM is more refined and articulate but more than capable of brutal.
You seem to like a lot of smooth, scooped sounds, so I'd go for the MM.
Edit: it has to be noted that both are insanely tight.