I just choose the exchange where the course is bigger for a particular coin and everything, and the better it does not matter, each has its own advantages
Precisely, if your coin doesn’t listed on binance then its useless, all exchanges have their own advantages but for this comparison, we know binance is way better compare to kucoin because of its trading volume but Again, it will depend on the coins you trade.
Binance already gained much attentions with how they attract traders and investor to use their platform, though its really early to say that it will keep the position since a lots of coins are also being developed to imitate them, the good catch is how he team continue to progress and developed the system, so far Binance also have my vote, but I also use Kucoin when I need to liquidate some of my tokens which is not yet been added from binance.
In terms of service both exchange have an easy to use interface so traders are free to decide what exchange to use though OP mentioned the fee
and again Binance exceed from that part as well.