I am replacing windows on my house and need advice

[Curmudgeoness]

3. I am not an expert, but I am told

that vinyl is the only way to go and they can be very energy efficient. You can get them in many colors, and as you probably will not get one to exactly match your house, try going with a dark brown that will not stand out with the house.

The amount of efficiency will be determined mostly by the price you are willing or able to pay. Just make sure that you go with a reliable brand name....I say this because I didn't, and they suck, the company that installed them is out of business, and I have no way of getting any remedy for problems.