O'Brien Baker sizing advise?

Hello,

I consider ordering O'Brien Baker 2012 but I am quizzed by the weird sizing chart they have. Sizing says: US 9-11 US 11-13. I wear exactly US 11 and I am in a serious doubt on which size I should chose. I am ordering from an online store and also live in EU, so a return will be costly.

Anybody have one of these, or any other O'Brien CT model? How do their sizes correspond to a normal shoe size? Which size do would you advise?

I would speculate that US 9-11 really means US 10 and US 11-13 really means US 12 so I have the choice to take bindings one size too small or one size too big... but which one is the lesser evil?

Thanks a lot for any info on the topic!!!