I have no arch, low volume feet and over-pronate. Have a set of Superfeet in every pair of shoes and boots I have. Been doing so since 1999 when I started working for REI in Washington. Been using them ever since. I replace mine about once a year in the shoes I wear most. I don't swap between shoes, but cut and shape the toe box area to each pair of shoes. I get much better support and less blisters that way.

That being said, most of the time you'll find me in Reef Flip-flops.