I've been on a parallel search, and here are some scattered comments to add to those above.
Was excited about many of the options, but:
I found the helios, which by every other measure was about perfect, was not roomy enough in the toe box (and I don't know how anyone can say they fit true to size – size up).
The BoCo while in some sense wide up front, used stretch side panels, so it still gave me a somewhat firm fit up front from the upper (not good for my neuroma).
I've tried all the Altra trail models, and they are great in terms of drop and roomy toe box, but often have elements that just seem awkward/clunky in fit and finish to me.
In addition to Altra, one of the most promising roomy toe box low drop cushioned shoes was from Topo Athletic. I have yet to get one in my size to try, but am pretty interested.


