I won a rifle at a banquet that had a VXI which is a leeetle bit better than a Rifleman. I'm a pretty big supporter of Leupold, but honestly I was very disapointed. Sold it post haste.
Also had a Pro-Staff on a 10/22. Didn't keep it long either, but IMO it was far brighter and clearer than the VXI.
As far as I know Nikon has a lifetime warranty. Might have to save the recipte, and wait a little longer than Leupold would require but it's something.
I'd get the Pro-Staff,,,,,,,,,Or better yet, save a little while longer and get a VXII. It'll last ya a lifetime.