I am about to invest in a defensive shotgun but am unsure of what I want. I already have a Benelli Nova with a rifled barrel for deer hunting and I have a Benelli M-1 super 90(H&K Older model) with a 28 inch vent rib that I use for bird hunting. I thought about just buying a different barrel for one of these but new ones are hard to find and very expensive and used ones are even harder to find and again very expensive. I can buy a good used whole shotgun for what most people are wanting for their used Benelli barrels. What do you suggest? Rem. 870, Mossberg 500, Winchester 1300, etc. Give me your suggestions.....................