Every people will have a different opinion about that so you need to find for yourself which you should choose. If you think that BUSD can make you satisfied with the interest rate, then you can choose that. But you should research before you invest, so you know what is the risk if you invest in that. If you only need to keep the value your money, then USDT will be your choice, but if you search for making another profit, then BUSD could be your choice.