Last year, I'am trading in the Poloniex because its feature are so beautiful no delayed on the price and the most of all I like the mobile interface of the exchange and no lag at all. But now I am disappointed on poloniex because there are not listing coins so much and the withdrawal are very strict, if you use another address for withdrawal the transaction will pending. So now I'am using a binance for trading, their all coins that listed on their exchange is legit.