here you go
if you can handle dealing with carrying around portable powwer supplies (I made my own with a 1000W pure sign wave inverter and 2 sealed lead acid golf buggy batteries in a lowepro 200AW nova bag)
these are seriously good value and awesome studio flash heads
this will fire those flash heads at any power setting you like at any shutter speed up to 1/8000 sec
if your intention is to dominate the midday sun this has way more grunt than trying to do it with speedlights
i have tested this out and mix the flash up with speedlights too, only wierd glitch i have found is when mixing the elinchrom and speedlights the light seem out of sync at 1/250 second all other shutter speeds are fine
I've tested this with 5Dmk2 5Dmk3 and 1Dmk3
the yongnuo does not have canon HSS and the nissin 866i that paul recomended does
for me the nissin is too close in price to the 430exii so i would just go the 430exii instead
i am considerig buying a yongnuo 565 to test with my odins since they are only $150 and have all the same functions as a 580 except HSS its pretty good value if they work
At the moment, I end up getting yongnou 565ex+ sf18 battery pack & pixel king wireless trigger set.
the yn-565 is very close to canon 580 exII aside from the fact that the swivel head doesn't have locks, recycle time is a bit longer and the hot shoe attachment is not a quick release as well somewhat minor differences and performance is pretty close to match the 580 except for the HSS.
I went with the pixel king since its functions are similar to phottix odin except that it has no LCD performance wise I'm happy with it the only sad part was the battery cover is so flimsy not a big deal unless it will get lost while shooting
I haven't fully tested them on actual shooting but I hope they will perform as I expected.