There are some... questionable things about this movie, but I still liked it.
Good:
Charles and Erik: This movie should have been renamed as X-Men: Charles and Erik. First Class is the beginning of their complex relationship (in more ways than one), and it's glorious.
OST: I must say, this movie has better OST than DOFP. Maybe it's a constant use of Leitmotifs, which I really love.
Villain: Sebastian Shaw is an awesome villain in all ways. Powerful, charismatic, as well as being the foundation for Erik's darkness.
Story: It's quite good and heartbreaking. Even though it's a Foregone Conclusion, but I like how it doesn't end with bright happy ending, instead being bitter and melancholic.
Training Montage: Especially "Rage and Serenity" scene.
Action: It's closer to meh, though. There are better action scenes in other movies.
Meh:
Rest of the characters: Besides Hank and Mystique, I think the rest of the chars could have been handled better. I like them, but...
Some moments: Mystique following Erik too soon, Darwin's death and Angel joining Hellfire.
Bad:
Rest of Hellfire Club: they are just unremarkable. their leader is a fantastic villain, but his underlings are anything but. Practically nothing is known about them. They're just Villain A, B and C.
7/10. I like it very much, but some aspects just drag it down.
Not as good of DOFP, but it's fine
There are some... questionable things about this movie, but I still liked it.
Good:
Meh:
Bad:
7/10. I like it very much, but some aspects just drag it down.