What is the best network for USDT?

As a cryptocurrency enthusiast, I'm constantly looking for the most efficient and secure networks to transact in USDT. Could you please enlighten me on which network you consider the best for USDT transactions? I'm particularly interested in factors such as transaction speed, cost, and security. Additionally, if there are any specific advantages or disadvantages of using a particular network for USDT, I would appreciate it if you could share those insights as well. Thank you for your time and expertise!