Be sure that you spend as much time choosing your windows as you do picking out countertops and paint colors. These will NOT save you money nor give you a monthly savings. Invest more on the front end on things that really matter such as products that WILL save you dollars each month. What brand you choose is vital especially if your plan has a lot of windows such as NDG-606 Take time to research and ask a whole lot of questions about different types and brands. There are tax credits available which can help you upgrade to a better product for energy efficiency. Ask your friends that have recently built a new home what windows they chose and why. They’ll rave about them or complain and possibly get a little upset…then apologize for bringing up a sore subject. Hey, what are friends for?