I went the 500 route myself. I just like the visual up top safety. read all kinds of stuff back and forth but it seems they both has been getting the job done long enough to call it a draw. at least for my dollars.

like that you can top off shotguns. also don't plan on taking one any armed gangs. but if anybody runs up to where I'm hiding I want want them to feel it. so I like shoguns... and like JJ pointed out... if its nit and elephant then hit it with a slug and see how it feels.