I agree with Topher's take. Definitely not a bad movie, but you knew how the whole thing would play out as soon as they revealed what was happening in the flashback. Probably the most predictable Marvel movie yet, with no surprises at any point, but a lot of that is due to seeing so many Marvel movies now.
I still enjoy Guardians 1 the most in this whole Infinity Gauntlet line, starting with Iron Man. Of all Marvel movies, Logan is high above the rest for me, but it's not fair to lump it in with the others. I would put Days of Future Past at around the same place as Guardians 1. I really just want this to end, and to move onto a new arc with new characters. The Avengers movies to bring this to a close need to be incredible to get past the audience fatigue.