My experience is mostly with the Mossberg 500. It's middle of the road in terms of weight, has a large amount of after-market parts available, comes drilled and tapped in case you ever want to mount optics of any kind, and extra barrels are much cheaper than I've seen for any other gun Ultimately, it can be very versatile without breaking the bank. Mine wears a recoil-reducing Knoxx Compstock, which could be beneficial for both waterfowl hunting and defensive shooting.
My Mossberg has been trouble-free over the course of 15 years and it resists rust well.
Last edited by idek; March 12, 2013 at 12:00 AM.