I got the subscription recently and then got in the beta.
For a long road trip on highways it was amazing, in city driving was tolerable to laughably bad. It was fun and interesting to test it and see a glimpse of the future though.
A few examples of issues I ran into:
At intersections it would stop too soon and do the slowest creep I have ever seen.
Navigating to a destination it would make awkward choices, left turn coming up? I guess I'll change to the right hand lane first. Made a right turn from the left lane once too.
It seems too passive about lane changes, I'd like it to recognize other cars and adjust speed to get over, instead of just turning on the blinker and waiting for an opening.
Was making a left turn in the turn lane, waiting for green arrow when I suppose the car got tired of waiting? decided to get back into traffic for some reason.
A few times I think it got confused and just dropped out of self driving and I had to quickly make an adjustment.
There were some trips it worked fine, point A to B no issues, but who knows when the weird behavior will come out. I did try the different driving profiles to see if some worked better, but got similar results.
I've canceled it for now, but will use next time I do a road trip. The stress free driving over the long distance is so very nice, but until it gets major upgrades the city driving is silly to unsafe.