RE: Rem 870 Super Magnum or Benelli Nova
I own a nova pump and like it a lot. In my opinion the Benelli and he remmington are very similar. Use and abuse them, they will both take whatever you can dish out.
The biggest difference is that there are a million 870s out there. If you wanted to buy a slug barrel for the 870 it wouldn't take you that long to find one. Heck it would proabably have the scope rings on it. The Nova is another story. I priced a new rifled barrel for the nova, almost as much as a whole new slug gun.