Cashu is very good privacy. Not even the mint you are using knows who is transacting or how much is being sent because it is cryographically blinded. But...

-The biggest thing is that it's *custodial*

-mints can print tokens out of thin air that are unbacked by Bitcoin and no one would necessarily know (although i think Calle is working on ways to mitigate this risk)

-still in early beta

-small anon set

Major caveats, but if they don't matter to you or you're just using small amounts so don't mind the risk seems very useful especially if more people start using it