I tend to measure out as a 10.5 on those shoe store foot scale thingys, but I find that my actual size varies from brand to brand and style to style.  For instance, I wear a 9.5 in Clarks, which may be due to the UK sizes being different, and I wear an 11 in Adidas and Puma.

The Steve Maddens I ordered were 10.5, and were clearly half a size too big on me.  It seems like they're on clearance, and there aren't any 10's available, so I can't say much more about them than that since I returned them.