RE: Monarch, Pro-Staff or Buckmaster?
The Prostaff is a very good scope for the price, just be aware that the windage adjustments cannot be done with fingertips, you need a coin or screw driver, other than that it is a good scope. The other models only get better as you climb the price range.
I once compared my $129.00 Prostaff with a $400.00 Burris Signature Select, and the Prostaff was much clearer and sharper the the Burris.