I've got a pair of Ahnu's that I've more or less worn to shreds, really should look at replacing them eventually, great waterproofing and comfort
aside from that, I've got my standard Merrell Chamleon low-tops (3rd or 4th pair in the last 6-7 years)
and some NB 991's for the gym (that also should probably be replaced, but I don't wear them daily, so I'm not overly concerned)