I was thinking along the same lines
WHC 
Yup, another DC 13.4 owner who wouldn't swap for anything
Tried a few on for fit and comfort in the Transair shop, and nothing came close - very important when you can be wearing them for hours at a time.
Ebay sometimes has second hand ones come up. Good idea if you're short on money. I bought mine new though. And I'm a poor student
