RE: what gun?
Most of them are H&R Ultra's, I have seen a few NEF's though. They are the same exact gun. NEF/H&R are the same company and they are owned by Marlin now.
If you want something with some versatility get a mossberg 500 or remington 870 in the combo model with a cantilever scope barrel. This way you have a bird barrel and a rifled slug barrel with a scope mount. You can get them for under 400 bucks.
Paul