i have a size 11 boot so should i get the 9-11 or 11-13 binding
The 9-11 should fit your boot, but i would go with the 11-13. I have the Ride Deltas and I wear a DC 11. The 11-13 fit the boot better. The 9-11 your boot will have some over hang.
Disagree. Go smaller. If you buy the 11-13, you'll whine about your boots being sloppy. I am riding Contrabands (9-11) with DC Super Park boots, size 11.5. Great fit, no slop.