X-Men 1 is pretty good, it has its flaws but it is an early ensamble superhero movie so I'll let the faults slide. X-Men 2 is awesome, one of my favorite superhero movies. Sure Wolverine is basically the star, but it is just such a fun flick. X-Men 3 is garbage, so many characters are given cheap deaths and the running time is way too short. X-Men Origins: Wolverine is also a really weak movie, and thankfully The Wolverine looks to be pretty much ignoring it. I loved X-Men First Class and am really looking forward to X-Men: Days of Future Past. To me, X-Men: Days of Future Past looks to be an awesome sequel to First Class AND a proper third installment in the original franchise (thanks to time travel pretty much erasing the events of the third film).
I have a feeling Man of Steel might be a surprise hit. I mean, it is only a few months away and it isn't even being hyped. Sort of reminds me of Batman Begins. We were all like "Oh, a reboot? Well the original series is the best, can't see how they'll top it." But like how Dark Knight blew away the Burton/Schumacher movies, I have a feeling that Man of Steel will do the same to the Donner/Lester/Singer films.*
*I do love the original Batman as well as Superman 1, the director's cut of 2 and Superman Returns, but the other movies really ruined the overall franchises for me.