I would go with Beers, but I've not come across the Yongnuo 585ex, maybe he got the number wrong.
I have two Yonguo YN565EX guns which are dedicated to Canon/Nikon, plus their latest one the YN568EX Which is capable of HSS.
These are cheaper than other makes and IMO much better value for money. I've also just bought their latest wireless flash triggers. Not had much time to play with them, but again look very good value for money.
Check them out at
http://speedlights.net/2011/08/28/yo...-flash-review/
Harry
Playing with my Yonguo's A while back I took this photo using both of them controlled wirelessly from my Canon 7D. Flower placed on my computer desk with a black card placed behind the flower.
