I've developed an interest in discontinued shotguns that are unique, high-quality, or otherwise special. Not necessarily expensive guns, but those that are worth seeking out. For example, I've recently picked up a Super X-1, a browning B-2000, a Valmet 412, and a Remington 1100 special field 20 ga. These aren't intended to be primary hunting or target guns, but just examples of good quality or interesting design. What others do you suggest?