As someone interested in investing in cryptocurrency futures, I'm curious to know which exchange in the United States is considered the best option. I'm looking for an exchange that offers a wide range of crypto futures contracts, has a strong reputation for security and reliability, and provides competitive trading fees. Additionally, I'm also interested in the user-friendliness of the platform, as I'm still relatively new to the world of crypto trading. Can you recommend a top-rated crypto futures exchange in the US that meets these criteria?