Did some background research... seems that ChinaBTC is ok. Trying 0.5 btc for a start. Will keep you guys posted.
The chinese bitcoin exchanges do not charge any fees, yet they do have expenses. In my mind this means that they are taking money from customer deposits to pay for their own expenses. The fact they are paying interest on deposits to give incentives to people to keep their bitcoin at the exchange only furthers this theory; I would stay away from chinese exchanges.
Chinese exchanges income
Fiat withdraw fee: ~0.4%
Venture capital by big investers: ~10 million for exchanges like Huobi/Okcoin/BTC China
Fee for futures trading using leverage
Fee for borrowing BTC, this is generally where the interest of deposited coins is from
And others like Ads
I don't think this would coveer the expenses of the exchange. The .4% for withdrawals is likely to prevent people from wanting to take fiat out of the exchange. The interest spread will only be profitable if enough people utilize margin trading. The interest paid on deposits get people to want to keep their bitcoin at the exchange.