I try to get mine up early. I love the excitement of it, so sometimes it goes up the first or second week of November. My husband makes fun of me. I also have a tendency to let my kids start opening presents early (like one small one every few days), but my parents were the same way when I was growing up. IMO, if you are hosting Thanksgiving at your home, you should have the tree up to get everyone in the holiday spirit.
This year, we are having two Christmas trees. Our new home has a gorgeous fireplace with windows on each side, so we're going to put up one in front of both windows for the sake of symmetry and then have a lighted garland and stockings on the mantle. I'm so excited.