I just paid $95 for these sandals that are supposed to be so great, and after an hour of wear they completely strangled my big toe and cut right into my foot. the straps are adjustable but won't stay in place once adjusted. When you lift your heel to step it pulls the strap tighter on your toe so you have to keep stopping and adjusting. I'm considering trying the Zx1 with just one strap but I fear it will be the same thing.
PLUS! I ordered them for a rafting trip form backcountry.com and the night they were supposed to arrive backcountry's shipping room sent me 50lbs of "Minority Business Review" magazine and no sandals. I ahd to buy them later from a shop.