@m2017 It is not a good idea to totally trust a crypto tumbler service, it's better to also make use of 2-3 privacy services if want to have a solid clean BTC.
@SynchroniceThe long existence of a Bitcoin tumbler is not what is important if privacy or BTC cleaning is the top priority because the said mixer is still never shut down because they are yet to have an issue with the authority.
Bitcoin mixers are constantly under pressure, right? So, when mixer provides mixing service for years without scam accusation and manages to survive for years under the pressure, that automatically makes me to choose that over brand new one.
If privacy is your priority, then I would say that this service is absolutely trust based one because you never know whether you are an user of a compromised website or not. So, I don't understand what's your point? Logically, isn't it better to keen towards old, well-established service? By the way, if you wanna hear my opinion about new mixers, I think Sinbad.io will become a new chipmixer but it's still early to speculate anything.
If time serves as a measure of reputation, then mixers such as the one mentioned in my signature inspire trust. But, at the same time solutions like Whirlpool exist, I think that, unless transaction costs is an obstacle to you, you shouldn't be spending time to decide. Do you value self-custody? If not, enjoy the comfort of the mixer. Just don't keep coins for long time there, as even if trustworthy, it can be shut down by authorities.
Have a read:
Your options to having privacy in Bitcoin - and their tradeoffs.
I think that if there is really a mixer that inspires trust, it's Cryptomixer.io without a doubt. It has proven its reserves and operates since 2016. As I see, they were advertising at past but haven't advertised for decades, maybe that's the key why they managed to survive. Or maybe everyone hesitates to use them because they showed their addresses to some people in order to prove their reserves? I don't know.
Overall, crypto mixer business become a very hard and difficult business. It's hard to create a mixer and operate it as it is hard to trust a mixer.