Tornado Cash was a privacy coin but got nailed
Tornado Cash is not a coin but a mixer.
What do you believe to be the best privacy coins (excluding Monero) ?
~it's about the level of reliability and safety those coins can offer.
There is such thing as "belief" in regard to choosing which privacy coins offer the best solution. Monero is top of the mind since it has been battle-tested that even IRS has a bounty on those who are able to trace/crack Monero transactions, it gives proof that Monero has solid underlying privacy technologies. With that in mind, there are few alternatives, but still, it also has other different advantages and disadvantages, we can name the coins like Grin, Zcash, and LTC.