I found Karate to be very stiff and posture-specific. Guhng Fu is much more fluid, and very adaptive. It incorporates some of the Judo priciples, like using your oponent's strength against him, with ways to make use of situations that favour you, and redirect conditions that don't. Balance is very important, but its a dynamic kind of balance. Tai Chi is very much like slo-mo Guhng Fu. At full speed, its more like dancing. I haven't seen such a contest, but I suspect that a fight between a Shaolin and a Karateka would would look like Rudolf Nureyev and a robot.

PonyOne, after Jit Khun Do, you would find Guhng Fu very rewarding. Like learning the practical applications after absorbing the theory. And with all the other disciplines you've sampled, Guhng Fu may just feel like 'coming home'. :)