coinexchange and nova exchange are good solution for now.
yobit will have their wallet on maintenance all the time so they are useless.
I do agree as I don't like Yobit all that much, I mention it because it could be the only option right now until we wait for Nova or maybe Coinexchange. Because right now no one can even buy 421 coins as there is no exchange. I guess we just need to wait a while longer but I hope its not too long.