I tried Parallels for my new M1 iMac as I used Fusion previously with Intel but they did not have their M1 version yet. I tried version 16 and it was very good, then 17 got even better. It is extremely fast to load and work with as I open and use VMs and I have had zero issues. So far I have only used it for previews of Windows 10 and 11 for ARM and I am impressed with the performance running both. The controls take a bit to find, adjust, and get right for sharing devices and folders, view options, performance options, etc., but once set it is smooth. I bought the product after successful testing and hope to use it for pre-release MacOS as well.