So the Cartel discs have three positions for mounting the binding front to back. I had to mount them so the binding is in the "toeward" most hole in order to center my size 13 boot in them. I mounted one Cartel leaving one Ride installed so that i could match things up. I got them dialed in pretty much spot on how my old Rides were mounted in front/back, stance, binding angle, etc. Once i got the highback angle dialed in, the fit feels pretty much the same.
I do notice how the Cartels have this lateral flex built into the disc. Sort of strange.
Basically riding these makes me feel like my boots aren't tight enough when i'm on the toe edge. I think that's purely a function of ankle strap but i'm not sure.