I trust Usdt more, it still exists despite all the courts and claims. But at the same time, busd deserves attention, because the binance exchange trustworthy.
I always use USDT but But this is in case of small amount. Less then $5000. I think BUSD is more safe. So i am used BUSD when my Balance is More than $5,000
security what makes the difference? what you mean probably has to do with where you trade or hold assets.
I also use BUSD more often than USDT because I do trade on Binance and keep my assets there.