In the entire crypto space the most recognised stablecoin is USDT, there are others though but USDT tends to outshine all despite everything that has been said about it. But coming down to Binance exchange, of course everyone will like to give reference to their stablecoin thus using it more. In addition, in this particular case, I think using BUSD will be better so that you can have the best interest rate as stated by you. There is no need to be afraid of BUSD since it is backed by Binance exchange.