I hope someone can help me. I'm trying to decide between 2 manufacturers. I live in Arizona and I received 2 estimates.The estimate was for 7 windows and one sliding glass door.One from Home Depot on their Simonton 6400 windows for $8000. The other from a local contractor using Weather Shield, I think the model is Desert Classic or Visions 2000 for $10,800. Both vinyl here for the heat. Both low e, argon, dual pane and grids. The price doesn't matter too much. If the Weather shield is a better window, then I don't mind spending the extra money. I've been searching for info and haven't found much so if anyone has some I would really appreciate it.