But have seen a few here at the club. For hunting, the Benelli's are good guns, but I have found that the triggers are very stiff, and with not much weight, the recoil is more excessive than I like. If you want the gun to both hunt and shoot clays, the 391 is a much better gun. For dove and quail, you don't need the Extrema either. Try the Eureka, it will handle what you want well.
Another poster mentioned buying an o/u because of fewer problems. It's true that they won't hang-up and there is a bit less maintenance, but I have owned Winchester, Browning, Beretta, and Perazi O/U's. After 20 years in just the sporting clays game, and 45 years of hunting, I prefer the semi's for several reasons.