I usually end up in a 28.5 to get enough width. I have a small collection of custom footbeds. Even when upsizing I can end up with pain owing to width and my high instep and pressure on the upper outside of my instep - garmont boots do this.
I bought a pair of scarp hurricane pros from stp in 28.5 and the feel pretty good. I have 25 mm behind the heel. Thinking about trying a 28.
Any wide lasted boots to suggest that support a high instep?