Firefox! I Have it set with "speed dial" when the browser first opens and anytime I click the 'home' button. I can set the number of open spots on the "speed dial" and then click and drop any web site I have bookmarked into a spot. When the browser opens, all my favorite woodworking sites are available with a small preview window. I can left click on anyone of those and it automatically opens in a new tab.
Firefox is quick and easy. Works well....I've always found IE to be slow, even on the new Dell desktop that we just got. Windows 7 is also really cool with the new features it has.