I'd buy those Edinburg shirts in a minute but the look of the "tapered fit" won't suit my pear-shape.
Here, I need what's called the "gentleman's fit."
Generically, I'd call my first choice the "Farm Stores". Salt blocks, gate latches, horse tack & saddle blankets. . . . those kinds of things.
Just about every one of them has a rack or two of good flannel "work" shirts.
Carhartt and Dakota last a lot longer than what seems to be cheaper, thinner fabrics.
Of course, if you have more money than brains, you'll buy nothing but Pendleton shirts. One of these days.