I think Anlin vinyl windows are over rated and priced. I got a few estimates and can't believe the prices. I have quotes for the Milgard, MI and Superior vinyl window brands and they are alot cheaper. I think if you have the money maybe spend it on more expensive windows. I looked at the U-Value and SHGC #'s for these windows and Milgard, MI and Superior have just as good #'s as the Anlin vinyl window. If the Anlin window was so much better why don't the energy efficient numbers tell a different story. All these windows are within a few decimal points of .28 U-Factor and .21 SHGC. Are a few decimal points worth $100 a window extra?