Both Binance and Kucoin are cryptocurrency world leading exchanges that is been used for exchange of crypto tokens, and also use for trading cryptocurrency. The choice of using any of this exchanges depends on the user, someone can make his decision on which to use. I personally prefer Binance cryptocurrency exchange because I feel it's very brief and simple to use and it is also safe, it will be very hard to loose money due to inappropriate withdrawal or deposits in terms of network selection, Binance will update automatically the network immediately after pasting the exchange.