thank you septimus, much appreciated. While I'm here I thought I would contribute my sizing experience since it seems to be a common question for people new to the brand. I am normally an 11 and using the printable tool from the ae website I was an 11c. When I had a chance, I stopped by a local L&T to try on the Park ave. I had my eye on several shoes on the 5 last (park ave, strand). They only carried 11 in D which ended up being still too tight in the toes. 11.5D seemed more comfortable but not quite right. I wanted to try a 3 last since I thought the wider toe would suit me better. Fortunately Amazon was carrying the Harrison on sale (in 11D), which is essentially the park ave on a 3 instead of 5. I was pleased to find it fit well as I hoped. Not sure if that means the 5 is out for me or I just have to experiment more with L-W combinations. Anyway hope this is helpful to a future researcher.
BL, thanks for sharing. This is similar to my experience. I wear a 9.5 D in the 5 last and 9.5 B in the 3 last. The 5 last is quite narrow, so I would try 11E to see if that's any better. Is there an AE store near by? In my experience, it's important to get fitted correctly at a AE store since they stock more shoes in different widths. Once you figure out what's comfortable in the 5 last, there are many popular options in this last you can choose from.