I'm 6'2", and I can cope with the legroom issue (though it makes using a laptop pretty much impossible). But I have a problem with the 18" and smaller widths,

I'm 6'2", and I can cope with the legroom issue (though it makes using a laptop pretty much impossible). But I have a problem with the 18" and smaller widths, and not due to abdominal or hip fat. My shoulders are just too wide -- on some planes, an aisle seat is the only thing that's comfortable unless the person next to me is small or someone I can occasionally take some space from without seeming like a jerk. Now that I'm in my late-30s and often have occasional stiff shoulders or neck for other reasons, I've started to pay this "genetic tax" of premium seats more and more often.