Rail- I picked up an EXO last year in coyote. I really love the pack. It fits all my needs and compresses down nicely. The suspension is very comfortable and the added some new bells/whistles based on customer feedback from last year. The KUIU look great also so truth be told I don't think you will be disappointed with either for the money. The new camo patterns from both companies are awesome to.
Just saw this:
http://hunting-washington.com/smf/index.php/topic,176468.msg2336923.html#msg2336923
I saw that..wrong belt size for me. Plus, an important part of the purchase for me is the warranty.
