crocs Cayman Sandal Review
I have a pair of Professional Crocs (no holes on top), and they have been great for everyday wear and airport trips. They get pretty hot, though. So, I picked up a pair of Caymans. Even in the same size as the Pros, the Caymans are a little slimmer and better fitting (while still giving you the room that Crocs are known for). If you want a looser fit, the Croc Beach style is roomier (and even bigger than the Pros).
Whichever you choose, be sure to give them some time to conform to your foot!

