I switched to White Tea (Republic of Tea) and it is great! I have been reading many studies on it and it seems there are up to 5 times more antioxidants in white tea compared to green. Also, the White Tea is very low caffeine. I get mine from Cost Plus Imports. I love it! Here are a couple of articles on the subject of greens & whites.

http://www.mybackyard.com/current/217p1.htm
http://my.webmd.com/content/article/62/71519.htm
http://www.thewbalchannel.com/healt...132/detail.html