I don't think you could go wrong with a Beretta 686 Onyx in 20 gauge. Here's a few, some 28 some 26inch. The EELL is pretty sweet.

nice Beretta

another 20

a 26 inch

another 26 inch

and yet another 26 inch

Last edited by mart; 08/23/14.
Chronographs, bore scopes and pattern boards have broke a lot of hearts.