Bestmixer.io replacement: Anyone that knows about bitcoin mixing, knows about bestmixer. Their mixing services were known throughout the web for their speed and reliability. They are also well known for mixing not just bitcoin, but bitcoin cash and litecoin as well. Unfortunately, they were involved in some shady practices which led to their services being raided and shutdown.
The best bestmixer.io replacement as the moment is Bitcoin Mixer Pro. They have excellent turnaround times and they are one of the few trustworthy mixing services still available. As a bestmixer.io successor, they are doing a great job so far, with big shoes to fill. They do not have the bitcoin cash or litecoin options, and hopefully it is something that they will add in the future.