I don't own any personally, but we have them at work on the technical rescue trailer for storing tools for building collapse. Also have them them on the engines. They've really stood up to the test of time and abuse by us knuckle draggers.
If you can afford them, I highly recommend. But like Rusty, my pockets aren't quite deep enough.
We just happened to go to our local Ace Hardware yesterday and they they all were. Tons of um lined up. They also have some that have the hand truck made on, too. They are really nice.