Welcome Tom Zorro:
I prefer the Andersen brand for looks, performance, durability and warranty. I have heard soooo many of the other manufacturers wrap up their sales presentation with "Its just as good as an Andersen". If Andersen is the standard of excelence it must be the recognized leader.
Many realtors will tout that a home has Anderson windows in the listing. They are not only one of the most attractive windows, but the quality is excellent considering all of the options that you can get. If you need custom sized they do it in limited selections. Home Depot does carry them cheaper than what Anderson reps can buy them for.