Do Nissin and Yongnuo flash guns work in CLS mode?

i have just read the manual for one of the Nissin 866!!!

there seams to be two versions - a mk II and a professinal.

not sure what the difference is as the specs look the same.

but they both seam  to do everything the nikon will do.

ttl-bl

fp sync

can be fired from my d300 or sb800 and have their power adjusted by the master.

and half the price of the nikon sb910

just have to see which version i can lay my hands on in the shops at the weekend.

--
Harry