Honestly, I don't think it matters as long as you can shoot it safely, hit something with it hopefully, and do so with good manners.
I would shoot a Browning O/U 30" barrels ( depending on the game we were hunting, what we were doing, I'd probably take at least 2 guns, one 12ga and one 28ga ) - and not feel bad about going anywhere to shoot in the field, sporting clays, skeet, etc. Manners and safety out-trump engraving every time ....
But if I was using the trip as an excuse to tell my wife I needed a new gun - I would probably order one of these:
http://www.kolararms.com/skeet.html
but order it with an adj comb, Trap stock on it, a 12ga barrel and a carrier barrel with a full set of tubes in 20, 28 and .410 . ( and then I'd only take 1 gun - with a 50 lb gun case ..). But unless I had at least 5,000 shells thru it before I left, I wouldn't take the new gun .....so I better order it now ( along with a new Lexus for my wife ...).