I'd say the story with the Transformers themselves in the third movie is almost kind of good, it's just weighed down by the humans and that f**king first half. And I would like the fourth one a lot more if they cut the annoying boyfriend and if it wasn't nearly three f**king hours long.
Last Knight is the worst of them all.
The first was so-so
Second was rough
I loved Dark of the Moon
Age of Extinction was so disappointing at first, but God its grown on me for some reason. The boyfriend though, "10 minutes! 10 minutes!" God almighty, it's horrendous. The constant boyfriend/girlfriend angle is killing the movies and it needs to go. Save that crap for American Pie.
The Last Knight though, yeah, I've only watched it once but it was just so bad. I think it's the only modern film I've only watched once and forgotten about it. And that's a shame considering Hopkins was in it. I've almost forgotten it altogether. Might need to watch it again just to be sure.
I do hope we can get a transformers-only movie someday soon. Peter Cullen is getting old and it just wouldn't be the same without him.