Another Chowhound link mentioned Wasserstrom. They have the JB Prince 1 Piece Aluminum Angel Food Cake Pan that is not non stick and 7 inches deep. I'm looking for onr myself, and this seems to be ideal.
Chicago Metallic Professional 2-Piece Angel Food Cake Pan with Feet, 5.8 inches deep. Non-stick. Available from Amazon, Target, etc. NordicWare Classic Angel Food Cake Pan 6.5 inches with feet. Not non-stick. Available from Williams-Sonoma.