I've got one of the A400 xtremes. It literally takes just a few seconds to field strip it, remove forearm/barrel, pull out the charging handle, and the bolt/spring/etc. comes out in one piece. Not only that, shooting 1-9/16 oz 1500 fps loads there is literally negligible recoil with the new kickoff mega stock. I had one inertia gun, and sold it pretty quick due to the not so pleasant recoil.
Benelli..... I have owned a bunch of them, and will never own any other type of semi-automatic shotgun. I put over 2000 rounds through a Super Black Eagle II without any kind of cleaning or failure. Just remember to keep it oiled. When you do decide to clean, they are simple and easy to take down.