Hey, I'm looking to get a second speedlite for off-camera use. I already have a canon 580, so E-TTL and other advanced functions aren't important to me because I can just use my 580 if needed. I've been recommended the Yongnuo's over Vivitar 285 Hv's since they're newer flashes. But there's a lot to choose from, does anyone know what the best yongnuo flash is in terms of power output/price ratio? I am just looking for one with a lot of power since I'll be putting it in manual mode only.
Thanks.

