durations: 1/2000 sec. (full power); 1/1500 (1/2); 1/1250 (1/4)
power source: A/C power unit (AlienBees Vagabond battery)
plug: 1/8″ miniphone
price: $225 (msrp)
pros: Powerful, fast duration at full power, modular (wide range of dedicated accessories)
cons: Bulky, needs to be plugged in (wall or A/C battery pack)
overall: The most powerful flash under $500 for shooting action sports. Requires a fairly large battery, so you probably won’t be fitting this system into your normal backpack.
Ryan Allan uses these flashes–