I thought I had finally decided on Beach Crocs only to notice on Extremefootwear.com that their is another model called Nile. I already excluded the Athens --- tried them on at a local store and liked the Beach better (didn't have the color I wanted in my size though). So I was about to order and noticed the Nile model. I love the open toe on it. So . . . how do they compare comfort-wise to the Beach?