Robosats, since you don't pay chain rates because you are Lightning.
But I will be honest, many will not tell you this. I have had my bank account blocked when doing p2p operations, I guess for receiving fraudulent Fiat funds.
So, if you use p2p you know what you are exposed to, so I don't see any problem in buying KYC, just try not to have things in your name in case the state tries to extort you.