Hi there. I have a 2017 Model S 90D. Original configuration was MCU1 + HW2.5. Because I had purchased FSD, I received HW3.0 upgrade. In my opinion, this configuration was a step backwards, as basic functionality like dashcam, voice command, and streaming music became crippled. I am now currently with MCU2 + HW3.0, and everything works as it should.
With regards to FSD Beta, is it worth it? I guess it depends on your expectations. Much like AP, you learn to use it, and understand its strengths and weaknesses - and over time it becomes a tool you end up using in your daily commute. It's not perfect, but I'd say 6/10 drives, I can get from point A to point B without any disengagements. Sometimes, I disengage because it runs more aggressive than how I would normally drive. That said, it is important to keep the hands on the wheel, as the wheel CAN still jerk from time to time. Overall, I'm satisfied with what it offers - and it's a noticeable improvement over the current AP people are running. This is definitely a step in the right direction.