I have brooks that is geared toward flat feet also. I don't have flat feet I have a very prominent/high arch yet I run like a flat footed person I guess because that's all the shoe people could recommend when I did my running tests at the shoe store.
I still don't understand why all my things lead up to flat feet yet I do not have flat feet. My body is a mystery even to me. Maybe my feet are going to randomly cave in one day and be flat. Its the only thing I can come up with.