On this episode of My Geek Show I tested the Clark Y airfoil I made for:
Endurance: Did a little better than the Easy Star Wings
Wing Loading: Did much better than the Easy Star Wings
Motor: http://www.hobbypartz.com/75m42-optima450-2220-950kv.html
ESC: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=13429
Batt: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6306