I I wear a size 12 boot and wouldn't suggest the targas for anyone with a bigger foot The ankle strap seemed just barely long enough for me.
Both boots and bindings are great and I would recommend them to anyone.
Even at size 12 you should be able to have more room for adjustment...
Sucks that you snapped one and still made a day out of it... I had to call it a day when my old sims bindings took a sh*t on me!