I have a set of the Cando (KBS) arms .Unfortunately I'm still in the building stage, so I haven't driven the truck with them on but they really clean the front up. No strut arms, No strut arm braces. You have to fab up your own shock mounts though. I'm very pleased with them.
You already know what I think. This is the first time I've seen the MMW's. Had to look them up. I can't think of any reason to hate on them, but I already have the Cando arms and have had them since early 2010. I don't have any issues with them. If I did it again, I might consider a spherical joint rather than the ball joints, but aside from that, they are perfect.
Those MMW arms are just flat steel and kind of ugly. I would much rather spend the money on the KBS/cando tubular arms.