I'm all mountain rider, btw im looking at Rome Mob and Ride Ex bindings. What do you think?
how much are you willing to spend? you would be much happier if you go one step up from mobs or ex's. see if you can find a sale on some rome 390s or ride revolts, both are a worthwhile jump up. unless you're new, if you're new to riding then ex or mob would be good. i started on ex's and liked them, but quickly outgrew them skill wise. i would also definitely check out forum faction bindings. cost about the same as ex or mob, but have a bit more tech in them.
i know tactics.com has a sale on rome bindings right now.
you're right on the edge with an 11. is that shoe size or snowboard boot size? a mid wide is definitely sufficient, but i would check out the waist width. compare your board with some wide and some regular boards.