My favorite is probably the Special Sporting Clays O/U. It's what I hunt with and used for everything except trap singles and handicap. In the picture below, there's a 20 ga. Lightning, a field grade Citori (my first O/U), the Special Sporting Clays, and a BT-99 Plus.
I inherited my grand-dad's Remington Model 11-A, built on the Browning patent. I added an A-5 Light but it really doesn't see much use. Shown below along with my dad's Rem 11-48.