Which network is best for USDT transfer?

As a professional practitioner in the field of cryptocurrency and finance, I'm often faced with inquiries regarding the most suitable network for USDT transfers. Given the diverse options available, it's crucial to understand the unique characteristics and advantages of each network before making a decision. Could you elaborate on the factors that I should consider when evaluating the various networks for USDT transfers? Are there any specific networks that have demonstrated superior performance in terms of speed, cost-efficiency, and security? Also, how do these networks handle scalability issues, especially during periods of high transaction volumes? Moreover, I'm interested in knowing if there are any regulatory considerations or compliance requirements that I should be aware of when choosing a network for USDT transfers. Given the evolving regulatory landscape in the cryptocurrency space, it's important to ensure that my chosen network complies with all applicable laws and regulations. Thank you for your assistance in helping me navigate this complex yet fascinating aspect of cryptocurrency finance. Your insights will be invaluable in making an informed decision.