Any mixer promotion and mixer offer is now prohibited here, so you probably won't get adequate answers.
Why would answers to questions like what are good mixers depend on whether people are advertising them in their signatures or not?
Because it's a project where trust is the most important, right?
When they promotes their project in this forum, they need to spend money which is not small since they're competing against other campaigns and this forum is the best place to know how someone else reputation, unlike trustpilot etc where the comments might be a bot or competitor.
There's a chance proven scam mixers run a campaign, but in this forum we can check the account's feedback and flag.
But, can altcoinstalks to be used as one of trusted source to judge the trustworthiness of a project? not every users will agree.