I went with a nationally available brand, for better or worse - bought it at HD. INjected foam filled metal panels, high R-factor, lifetime warranty. Materials cost was around $500 for the size I needed, installation was easy; not sure what their installed price was. If you don't have an HD credit card, you can get 10% off your first purchase and take a year to pay for it without interest (but make sure you DO pay it off before, as the interest is acruing, and forgiven ONLY if paid before the promotion is over). Clopay.
The HD version of this door is 2" thick and has a higher R factor than the pro version, which is 1-3/8" thick. They use different spring systems, the HD version is easier and safer for a DIY'er to install.