On the issue of durability, Consumer Reports, October 2000 rated
windows on durability, among other things, where

durability "indicates how well the windows performed after two weeks of
severe temperature fluctuations and intermittent spraying with water"

The only windows that were rated "excellent" were Marvin aluminum clad,
Pozzi aluminum clad, and Andersen Millenium (which evidently is the
Renewal line -- vinyl/wood composite)

Notes on almost all the other windows include "some parts warped or
loosened in durability tests". This includes Pella and Caradco
aluminum clad, Andersen and Weathershield vinyl clad, and all solid
vinyl windows except Weathershield, Alside, and Certainteed.