fiat not yet supported on binance but of all those exchange I prefer binance because of their smooth interface on trading. All are goof as well but their system is really amazing especially the new features like view of gainers and losers of tokens which listed on them. It will help traders to think which coin to play with since you can easily know which token/coin are dipping that everyone can utilize the "buy low and sell high"
Take note not every crypto gets the opportunity to get listed on binance. They screen the project vividly and should pass all category such as financial, technical, and concept. So for me, If youre asking which one is better Binance win for me no questions ask.
I agree with you, besides the interface and features, Binance also offers low trading fees and discounts when using BNB for trading fees
According to the latest news, Binance plans to allow fiat-crypto trading;
https://cointelegraph.com/news/crypto-exchange-binance-to-offer-fiat-crypto-trading-via-malta-based-platformI hope it will be achieved this year