Binance for the coins they offer. Huobi looks hot too. Too bad it's so hard to get if we're not from China.
Yes, that is the disadvantage of those who do not come from Chinese nationality. But we still have other large trading floors like Bittrex, Kucoin, Hitbtc .... among them Bittrex is the best and prestige.
Do not think too negative because there are other trading floors are better than Binance.