The Good: From the very beginning, you're smacked with some suspenseful action. Director Brian Singer does a great job at developing the main characters in meaningful way and successfully balances out the large number of characters on screen as well. There was much more humor and comic relief than the previous films with plenty of inside comic jokes, and many references to the previous movies. (Probably to help make you feel less bad about watching them.) There's a chance Quicksilver (comics) may become a fan favorite for a few minutes the same way Nightcrawler did in X-Men 2, or how The Incredible Hulk did in Avengers. Beyond that, the [future] Sentinels were very intense and great to finally see on the big screen. Lastly, the powers displayed by many of the new mutants will surely not disappoint.
The Bad: Any time you're dealing with Time Travel in movies, it can get very messy. Even though they do make an effort to explain a lot of inconsistencies from the previous films, there's a good chance some people may get lost. There were a few times during the movie when some things just didn't add up, or that you may miss, and would probably require a 2nd or 3rd viewing to fully comprehend. The 3D aspect was minimal and was only apparent in a few scenes, and are probably forgettable.
The Reason: This film did exactly what it set out to do; Fix the problems of the previous films. (due to change of directors and such) Fans will be pleased that a lot of issues are fixed, and whether they make another sequel or not, this film can stand firmly on it's own. Caution for parents, even though this is rated PG-13 there is a partial nudity scene, and adult language to consider. (1 F-Bomb, and about 3 S-bombs) If money is tight, then don't worry about the 3D. You can enjoy this film perfectly fine without it. If you want to see it in 3D, try going to a matinee show to save a few bucks. Many will try to compare this film with other Marvel films like Captain America: The Winter Soldier...The best way I could compare them would be to use a sports analogy: Captain America was like a team that took a 30 point lead, while X-Men:Days of Future Past is like a team that fought back from a 30 point deficit. While this very well may be the best X-Men movie to date, that's still not saying much. But it definitely will give hope to the franchise moving forward. Go watch this film, and enjoy. Watching the previous films may not hurt either since this film will make heavy references to all of the previous films in some capacity, but it's not necessary to do so. ( FX Movie Channel has been known to run marathons of X-Men Movies so check your local listings) Oh and stay for the ending credit scene all the way after the credits.
The Rating: 8.5/10