Get this Dynalite RP800, normally $914.95, on sale at $823.46 for a total savings of $91.49.
The Dynalite RP800 800W/s Road Power Pack is powerful and versatile enough to handle a wide variety of on-the-run assignments like fashion, corporate work, portraiture, weddings and interiors. The pack has 3 head outlets and breaks down its output symmetrically or asymmetrically over a 6 stop range with short flash durations at a super fast 1.2 seconds recycling time at full power. A variator knob allows fine tuned exposure adjustments over 2 stops in 2/10 stop increments. Triggering options include sync cord (provided), IR or optical slave. The RP800 is compatible with most optional radio remote systems such as PocketWizard.
Although you may be tired at the end of a long shooting day, it won't be because of your equipment. The RP800 pack weighs 5.3 lb (2.4 kg) and measures 5.87 x 6.87 x 6.12" (14.9 x 17.4 x 15.5 cm). That's a lot of power in a small package.