Please only those who will provide an educated un-biased opinion:
I am looking at the following manufacturers and want to know who is best?
Vinyl: Certainteed, International, LBL, Milgard,Anlin, Simonton, Pella, or Atrium
Wood: Superior, Marvin, Windsor, Weathershield, or Hurd
Also looking at a product called Prism Grid. Any thoughts?
Finally What are the most important selection factors when selcting a Window manu other than: Spacer type, Gas type, NFRC rating?
Thanks for all the info!