depending on what platform you will use to trade, if you use Binance Platform then it's better to recommend BUSD than USDT, but in terms of price, maybe USDT is safer and can maintain its value as well.
Yes, if the trader will be under Binance, there's advantage of getting the BUSD. However, don't put all your investments on that. It is always better to diversify your portfolio. Because you have no idea what will happen next, it is better to safeguard your funds by putting them into various currencies.
Whatelse are you protecting since you are doing it on binance platform itself. This is the exchange platform that owns BUSD and doing it with their cpin should be better. Well, USDT can be a good choice too because it has been in the space for quite some time now and it is well recognized. Binance itself recognises it.