The gun: S&W Performance Center 10.5" compensated hunter

Plan on using a set of Burris XTR Extreme rings. Overkill? Yes. But so is the gun.
Burris and Leupold where my only 2 serious brand choices, and I'm split between these 2:
http://www.leupold.com/hunting-shooting/scopes/handgun-scopes/fx-ii-handgun-2x20mm/
and
http://www.leupold.com/hunting-shooting/scopes/handgun-scopes/fx-ii-handgun-4x28mm/
Needless to say no one up here stocks either of these let alone pistol scopes in general. I played w/ Leupolds variable scope @ Cabellas a month or so ago, Nice but i dont see myself needing the variable, not @ $200 more anyway.
Gonna be used (ideally) off a shooting stick, max distance between 50-100 yards.
So yeah, opinions?
Thanks