I saw the movie last night and I was blown away. In my opinion, it's a little bit better than the first one. I was upset about a few things that the writers, producers, and Bay made HUGE mistakes on but they were on a budget so I will forgive that.
I'm extremely upset at the fact that both Unicron and Primus weren't mentioned in the movie because the Fallen was one of the original 13 robots Primus created because Primus is the plant Cybertron. Unicron and Primus got into a fight and The Fallen was taken by Unicron.
I hope they're both mentioned in the third one, seriously.
Overall, I'd say that this movie is worth checking out because it's filled with action. I believe that the writers should've focus more on this story because I felt like that they rushed it and that's not a good thing to do when millions of people are expecting another classic like the first film.
Transformers ROTF is a bit better than the first one and you will like it.
I'd give it a 4/5