[Spats McGee]

I like the 870, but there are several Mossberg models that will fit your needs, as well. (I'm not all that familiar with Mossberg models, so I'll decline to list a specific one.) Were I in your shoes, I'd be looking for a used shotgun. That way, I could save some of the budget for: (a) ammunition; and (b) modifications that met my specifications, rather than a pre-packaged deal.