Going to suggest something different than everyone else. Get them 28 gauges. They will do just about everything a normal 20 will do but less recoil, less weight of the gun, and shells.
Good choices....Remington 870 Wingmaster or an Express (cheaper)28 gauge with choke tubes, Remington 1100 28 gauge (although heavier than the 870 by about a lb.), and a favorite of mine....Remington 11-48 28 gauge in either IC or modified as they are a fixed choke and weigh about 6 lbs., same as the 870. I have two 11-48 skeet guns in 28 gauge.....my absolute favorite bird gun behind a pointing dog.
Believe Cabelas in Olympia has an 11-48 plain barrel 28 , modified for like five something. Saw it online in their Lacey gun library. Just a though, and down the road the 28 are always valued higher as they made fewer.
Of course there are several over and under choices in 28 gauge.........
