I'm flying a 3dfoamy Tiburon bipe (16oz's) with the 20-20L. A bunch of power. I really like the small prop and lots of power. Because of the smaller prop I can get it to torque roll right and left. (That's my hypothesis at least) A bunch of fun. Only about 5 flights on it so far so we will see. I don't have the right battery though as I'm only using a tp 1320 3 cell right now.
video of it flying with this motor:
www.psk560.com first link.
Hope this helps,
Craig