I love the durability of crocs, and the fact that they don't smell horribly after a few trips through the wading pool.  My only complaint is that the sizing can be a little difficult to fit.  My son is in an 11.5-12 shoe, and the 10-11 crocs are too small, but the 12-13 were a bit big.  I'm hoping he'll be able to keep them on while running...we'll see.  The Amazon price can't be beat - I looked at Zappos and at the Legoland store (both places had them for $35).