The M5 breaks in quick and immediately became very reliable. I like them better then the Sharks because the toe box is wider and fits my foot perfectly. I also really like the heel cup because it seems to fit anatomically better than other climbing shoes - it has that 'glove fit'. I've been on some really long pitches at the Red the last couple of days and my feet never hurt in the M5's at all,
This review was written in the old system and had content requirements that are different than reviews written today.