I ordered the Med. Cartels from REI. (...in store's sold out!) Unfortunately, they will not get here before I leave for Boyne Highlands next week.
Not sure if it helps, but I had issues with size large Cartel reflex bindings on an Arbor Wasteland last season and some overhang I couldn't get rid of after adjusting them. Returned the bindings for size medium and it was a lot better. Size 10 burton Ambush boots here.