The 870 just felt narrow and off a little. Not knocking them, I know they are loved by many. Never considered the browning bps. I have read they tend to rust?! Any experience with that? I know the benelli is not the most beautiful gun, but more interested in quality, ease is use and longevity. Gonna take a good luck at bps.
Any gun will rust if it is not taken care of. I would not let that be the deciding factor in purchasing a firearm for me because it is easy to prevent. For my shotguns I just wipe them down with Balistol after the season is over or if they get rained on.