What are the best crypto OTC trading platforms?

Could you elaborate on the criteria for determining the best crypto OTC trading platforms? When evaluating these platforms, should traders prioritize factors such as liquidity, security, customer support, or user-friendliness? Also, are there any specific features that set apart the top OTC platforms from the rest? Additionally, how does the regulatory landscape impact the selection of a crypto OTC trading platform? Lastly, could you name a few examples of the top crypto OTC trading platforms and briefly describe their key strengths?