Personally, I prefer KuCoin, since their UI looks really nice and I like the KCS bonus (I referred myself ) Also they add the new currencies faster.
What are your thoughts on this?
Some links I found:
https://coinanalysis.io/kucoin-vs-binance/
https://cryptofastlane.com/blog/kucoin-vs-binance-exchange-kucoin-better-binance-best-cryptocurrency-exchange/
Good exchange is not determined in its UI because there so many shit exchange that have good UI but poor in service. Kucoin is just a piece of junk compared to Binance and their difference in terms of functionality is too far. Kucoin will be vanished someday due to lack of safety features.