"Shoot, a fella' could have a pretty good weekend in Vegas with all that stuff."
I also Brannock an 10.5-11 C (with a 12.5-13 heel-to-ball), and I've found 11.5 B to be the most comfortable size for me in most lasts. I'm not completely flat-footed, but I'm pretty darn close. When I first started shopping AE, I didn't live anywhere near a store, so the first ~half-dozen pairs I bought were all 11 D. While they didn't bow as much as yours, I definitely had more room at the ankles than I should have; the 11.5 Bs I've gotten since then all fit and look much better. If you have an AE retail store nearby, it wouldn't be the worst idea to stop by and see if they have anything you could try on to see if it's worth considering for the future.
Welcome! Prepare for your collection to double within 3 months if you keep hanging around here.
Out of curiosity, do you guys use heel savers? I live in NYC and do a lot of walking, have 3 pairs in rotation (with a fourth sitting on my shoe rack waiting to be worn for the first time) and have figured that my heels will last almost a year before needing replacement. I've started looking into way to combat the wear, although inevitable, long enough to get some extra miles out of the heels before needing replacement again.
Welcome to the wallet draining party :-)