Yomgnuo YN560

Anyone had any experience with the Yongnuo YN560 external flash gun? It's a lot nearer what I can afford but do you get what you are paying for?

I have a couple of Yongnuo 460-II flashes and they're good enough for what I'd use them for.

^^Same here. There is a thread about this in the Flashes section of the forum.

Thanks. I've got the opportunity to buy a new Yomgnuo or a used Nikon SB400 for about the same money. Which way shall I go?