I'm in the market for another pair of AE's. I own a pair of Bentons (8-678) in black, and a pair of Strands (5-65) in walnut, both sized in 12EEE. I've have to say that the Bentons are probably a little more comfortable (which may be more due to the rubber sole than the last). Anyway, I find it hard to get a straight answer from the sales assistants in the store (same story at multiple locations in New York and Chicago) on which last would be best, as I think they want to sell what they have in stock (can't blame them).
Given my work and travel schedule, I find it easier to buy online. Am hoping for some suggestions on which model (or last) you've found fit best for flat feet -- help me cut down on returns. Many thanks