Do ya'll think the Merrell's, Solomon's, Keens, and Vasque shoes are all flexible enough?
I have been using the vasque mantra since March, at least 2-3 rounds per week.
It is a super comfortable & flexible shoe. Almost feels like a pair of slippers. That is also the reason I was weary about them holding up, but they are still in good shape.
http://www.rei.com/product/757633