For some reason, though, I didn't have nearly as much a problem finding shoes that fit relatively closely in the US.
When I say that the the larger size is too big, I mean that I can comfortably fit my fingers in the back of my heel, with room to wiggle my fingers.
When I say the next smaller size is too small, I mean that my toes are bunched up in the front of the shoe.
Surely, there should be a size somewhere in between.
My shoes from the US all have a bit of space in front of the toe, so your feet don't get cramped, but not so much space that you have to worry about your feet falling out
Perhaps US shoe sizes go up in smaller increments.