That first was amazing. It had an energy that, frankly, no Star Trek had ever before displayed. It was a case of perfect casting for well known characters. Great score. A great Star Trek story. A villain that one could find compassion for despite his villainy. Its only problem was that (for classic Trekkers) it was too Star Wars-y. But to hell with them, that movie was one of the best of this century.
The second was a big bag of meh. I liked Cumberbatch in the Khan role, and Peter Weller was a good villain in his own right. But the movie just never really clicked as its predecessor did. It had another great score, though, but for the life of me, I can't recall what the plot was.
The third ... eh. I likened this to how I felt right before Batman & Robin came out (after what Schumacher did to that franchise in Batman Forever. BF was such a dramatic change in tone from Tim Burton's movies, which amounted to a huge steaming pile of crap IMO, leading to one of the worst movies ever made and still resonating with me years later that I very nearly missed seeing Batman Begins (one of the best Batman movies) theatrically. Same kind of thing for me after Star Trek Into Darkness. Star Trek Beyond was not nearly as bad as those Schumacher Batman movies, but it just didn't have the same feel for me. Terrible plot. Forgettable villain. I don't even recall the score. And after the first featured a futuristic motorcycle, why the f*** are there 1980s dirt bikes on some alien planet where a lot of the action took place?
I hope the fourth can recapture the fun of the first.