I am about to buy a 580EX II for my main flash to be used on camera, but I would like to pick up a few extra flashes for off camera. Since these will be used strictly off camera with PWs, I don't see the need of buying multiple overly expensive eTTL flashes when they can only be used manually.
What the your favorite/best/most used manual flash? Why? Even though I want a few cheap flashes, I would still like to have a good range of manual control and a some good power behind them.
I've read a little bit about Vivitar 285HV and Sunpack 383, but not sure about the differences. Does one work better with PWs for one reason or another?
Thanks for any advice!

