You might want to also keep an eye out for slightly older beretta SxS boxloxks. They can usually be had pretty cheaply, are light and reliable. They are plain-jane fixed choke guns with single non-selective triggers and are suitable for modern ammo.
A friend picked up a 20g 26" one for about $600 a couple years back. weighed about 5.5 lbs. Nice bird gun with modest loads for Grouse, Woodcock or quail. It was a bit light for high volume shooting or Stiff loads (the gun would probably hold up fine but you might take a beating).
FWIW.
