Im on vacation and worn out from all the fun but only have time for 1 movie: I want some reviews on these two?

Green Lantern
X Men First Class

Are they good? I loved all 3 X Men and I have yet to find a super hero
movie that was trully boring,
And yes i loved Wolverine.

So If i could only see one of them (at least for tonight) which one is
best and why