You're right in the middle of the size range. I have 10.5 Kaijus and run M/L Atlas' and that's what I would run. I can fit into L/XL bindings without an issue, but I'd rather not have the toe/heel drag if I can get away with it.
Yeah, would much rather go with the M/L if I can properly fit into them. Do you have to extend the heel cup all as far out as possible?
EDIT: Also, how do you like the Atlas'? Have you ridden on the Contact Pros at all? What would you say the primary difference is between the Atlas and Contact Pros are just based off of specs? Thanks!