Samsung flow is good, but the functionality is somewhat different. You need to manually start it on both sides. You can only open a single phone screen on the PC side - not multiple windows for each app. There is no separate handling for text messages or photos in Flow, also.
The good news is that you can use both Phone link and flow at the same time, until Microsoft and/or Samsung fix the situation with phone screen not working in Phone link. When they do, I'll stop using Flow.