I have Speedplay Frogs (love love love!) and Specialized Taho shoes.

The shoes are probably too soft for what you're looking for, but they are mighty comfortable, and I've walked a lot in them, no problem.

http://www.mtbr.com/reviews/Shoes/product_125934.shtml
http://www.speedplay.com/index.cfm?fuseaction=home.frog