I just received my Yongnuo YN968N Speedlight and YN560-TX IIN trigger I bought off eBay.

I've never owned a non OEM flash before and was really surprised at the high build quality. Communication between the flash and the trigger was a cinch to set up and TTL works fine.

Time will tell with longevity, but for the price of these two units compared to Nikon gear, it was worth a gamble.

Anyone else use Yongnou flashes (or other knock offs) and what do you think of them?