I don't have any reason yet to use DAI but I have some BUSD in my wallet so in this case I prefer BUSD. But the stable coin I used most is USDT because it is acceptable in almost every exchanges and also multi-chain.
BUSD also already exists in many exchanges and also already has many chains or networks that you can use at this time, so in general BUSD is also almost the same as USDT so it is always good to use even if you only choose one of them which is already the same. equally good.