Jeez, sorry, this seems like such a childish question, but it's really bugging me. So as I mentioned in another thread, I purchased a pair of Allen Edmonds Lexingtons, size 8.5D. They are tight. I wore them yesterday afternoon (about 3 hours) and today (about 9-10 hours) and my feet are dying! In the store I tried on a 9 and my feet slipped a bit in them, not so much that the heel slipped, but they felt just a tad to big. So it would seem that I'm between a 8.5 and a 9. These being my first quality shoe purchase, are they going to break in to be comfortable? If so, how long do I give them? Or should I try and exchange for the 9?