Lowe's is running a special on the Reliabilt Survivor 5600 series -
free Low-E and Argon.

A contact at a local Norandex/Reynolds dealer suggested the Simonton
Prism Bronze series.

With all other features being equal (grids, screens, etc) and the
prices within a few dollars of each other, which window would be the
better choice?

They're going in a basic colonial in western NY where the owners plan
to live for 5 - 6 more years. The install will be a DIY project.

Thanks!