In my eyes the bitxmixer stays the best, its already for a long term in the running and also stays good and is also good reviewed by many people.
Cannot agree more, the bitmixer tumbler is good and trusted, I used them 2 times and I never had any problems, they are also having a good support by the way.
Bitmixer is very good but you also now got cryptomixer, I tested them both but I do not really prefer one, they are both good and I think they are even almost exact replicas from each other.