I have watched episodes 1-8 so far. 1-7 were ok, not great but not terrible, but holy episode 8 was good. It's a better black mirror episode than any of the actual black mirror episodes of the newest season.

Episode 1: crap
Episode 2: fairly bad/crap
Episode 3: a little intriguing but not really good.
Episode 4: a little intriguing but ultimately poorly thought out/bad. They kind of tried to mix too much with this one I think, they had two interesting premises and they should have picked one to focus on.
Episode 5: not bad but not good. Easy to figure out early on which makes the rest kind of boring.
Episode 6: crap
Episode 7: eh... Boring overdone premise and poorly executed. The main actor did a pretty good job which made it watchable, but overall forgettable.
Episode 8: loved it, it does a really good job of making you question both technology and humanity.
Episode 9: TBA
Episode 10: TBA

Episode 9: so much potential. They should have just played it straight. They set up a good mystery and should have kept at it. Instead they did this bullshit "subverting expectations but actually it was super obvious so it didn't subvert" plotline which turned really boring really fast.

It was really good until that switch though.