My personal scope that I use aboard a cantilever Mossberg 500...
A redfield 3-9x40 Television View. This scope offers good light transmission (being that it may have been made in the 70's for all I know) and a WIDE field of view. Its called the Redfield Widefield Lo-Pro. It's designed for rifles but it handles just fine above my mossberg 500. Even throwing some nice groups.
I've sat till 7:30 in my stand and I could STILL see the crosshairs. And we're talking pitch BLACK here! Got to love that heavy duplex.
