When I lived in Europe, I only wore these sandals.  They are much cheaper over there (around 55 dollars, or 35 on sale).  In Germany, I believe you can pick them up for under 30 dollars.  When I returned to the US, I couldn't find them reasonably anymore so I tried out a bunch of different brands and types.  And now, seven years later, I decided to sink the cash and buy these again.  All I can say is, sorry I ever tried anything else.

If you like these, then don't bother with anything else.  If you don't know what these are like: imagine a sandal that stays put on your fut and doesn't mess up your stride.  It's also fully adjustable, so you don't have to worry about the straps being too tight or loose.