F3F/F3B Competition Sailplane
If you like fast and responsive, Twister has it in spades!
Just look at the above video from videographer David J. Olsen (via RC Groups) of a Twister F3F making speed runs at Point Fermin cliffs (Southern California)!
First time through, watch the flying. Second time through read the captions!
Vimeo video by Phil Davey - CLICK HERE