Leupold VX II 1-4x 20 mm, Duplex.
This is my idea of the perfect setup. I've got some 1-4 X 20 and also 1.5-5 X 20 scopes. Midway has some Picatinny scope bases that have the weaver cut outs all along that are much easier to place the scope where you need it.. That's the only way to go.