So a studio flash with 1,000 joules weighs a little something that should be a clear. One should have an appropriate tripod to. With normal softbox is usually enough even 500 joules. With beauty dishes, combs, and other light-eaters, small aperture can ever need more light. That's why I've allowed myself as main flash this Jinbei. And who does well his ministry.
As usual with xenon flash tubes, the spectrum is fairly evenly. Although I have created your own camera profile for, but the light is very similar to that of other flashes.
On the Internet are some strange tutorials go, justify the higher price of other brands drastically with the flash duration of the flash. Unless you want to photograph a bullet in flight, the no relevance for normal photos. It is neither the background illuminated differently, yet one has to compromise on color.
Conclusion: Perfect solution for high light output with increased weight. This power you need but only when you know what you want to do with it. Otherwise you can save with weaker flashes weight and money.