I know the forum doesn't like Qflash but I've found it to be the best portable system out there, for commercial location and editorial photography.
You can shoot up to 1/8000th sec https://BANNED/Edwardmossphoto/status/311491203235467266/photo/1 The pic was taken after a climb up a small ladder and several landings, Qpaq-X with X5d-r Qflash/Octabox.
Power is plenty for most applications.
The Qpaq-X SLA batteries are £12 to replace.
Cost isn't an issue if you buy smartly.
I've been hammering the same T5d-r for the past 4/5 years, dropped it several times and it just keeps working.
I take 3xqflash to all my jobs, I never get caught out if a client says "Oh just while you are here can you..."
The same system does speedlite/hotshoe and studio lighting, most importantly it never blows up, even after hundreds of full power flashes.
Coupled with brilliant support/customer service, I'm happy...
The Bowens only come out of the bag for studio style portraits..
Is this a LED only flash?
http://qtm.com/index.php/products/omicron-led-ring-lights/omicron-3