I've seen a lot of posts regarding the 870 as well as the Mossberg 500. I would like to get a basic do-all shotgun. The Bi-Mart where I live has a Mossberg 500 that comes with an 18.5" barrel as well as a 28" - it does not have an extended magazine tube (also has a nice walnut? stock ) price $269 (may go on sale soon. They also have a "Maverick" Mossberg that is cheaper - what is the difference between that model and the 500? Anyone voting for the 870 or possibly the Winchester Defender? Please support your answer....