From K2 the Companies. That's their stiffest binding. Features that work, like the ankle strap hinge. Once that is not longer a K2 patent, expect to see it on everything cause its seriously amazing. Canting and Harshmellow for the loveliness.
Machines may be one of the stiffest bindings on the market. Even from the Raiden duder, they don't even have any team dudes, including Eero, that ride that binding, cause its just that gnar (I like commas and run on sentences). So if you want something like that, get these. Canting and my favorite dampening system on the market, airbags.
Rome, don't really need to go into that. You probably know everything there is to know as they get talked about a lot.
SF45's over DMCC's unless you just want to save weight really.