Back on topic. I'd avoid a Win or CD 101, unless it is an extremely good deal, because parts are almost impossible to find. With older O/Us like Beretta or Miroku, parts can be had. I'm surprised that no one has mentioned the first generation Ruger Red Label 20s with the blued frame. They were fixed choke only, but that can be addressed down the road. Very nicely finished, most with excellent wood, kind of a sleeper.

Best advice for buying a starter gun, new or used, is to buy the best one that you can find at your price point. Pick a price and look at everything, rather than looking for a specific gun.