It's funny you mention that OM. New Balance regular running shoes used to fit me great and provide the support I like even with up to 15 pounds on my back. But before trail runners were popular, they changed their manufacturing and they don't fit as well any more. They fit narrower than they used to, at least on me. Even with good insoles, I think in the effort to make the shoes light they have lost some other aspects of the shoe that I liked. Trail runners I've tried (because of the fit; fit first always), including Merrells and Keens, are in a pile in my garage currently unused. Actually, I'd forgotten about them until now. I don't know how this is related, but I developed my heal spur after about 6 months of testing out the trail runners. Maybe I am just getting older (56) although I do focus on running light. I currently run in Merrell Moab mids with my Heel that Pain inserts and all is well.