Did you set the diopter on any of the binos?

http://m.youtube.com/watch?v=CyY1Brv...%3DCyY1Brv6KjI

It will make a big difference in your range of focus even when looking thru demo/shelf binos.

Without being a bino "snob" I dont think you would notice much a difference between the talons and vipers. The talons are one of my favorite binos from vortex.