Optical quality for the money in thi range I'd go with a Burris FFII, the 3-9 will run around $200 and the 4.5-14 around $300. Much better glass quality and coatings than the low end Leupold and Nikon offerings. Also look at the Bushnell 3200 in this price range, and the mid-range Pentax.
I'm a big fan of the Nikon Monarch and Leupold VXIII, but the Nikon Prostaff and Leupold Rifleman do not live up to the reputation the companys command. There is a difference between buying a low priced scope, and a scope built down to a price.