Well, I may not be of much help, but...here's my deal.
I haven't ridden Exo's yet, but I did try 'em on in the store. They were nice, and comfortable for the most part. But, they put A LOT of pressure on the top of my foot right above the ankles...and the laces weren't tightened either. I've heard they take some breaking in to get 'em loosened up, and they may be completely right. But, I rode some Byerly's at a Hyperlite Demo (Parks and Maeghan were there!
), and those Byerly's were SO EASY to get in and out of and SO COMFORTABLE right out of the box. I had to get a pair of those. I traded my Exos in for the Byerly's.