If you want more content, look for the "Rogue Cut," which adds 17 minutes of footage, including a sub-plot featuring Anna Paquin's Rogue.
Many "exclusive" versions include the deleted subplot where the future X-Men rescue Rogue so she can take over for an injured Kitty Pryde. This version adds significant emotional weight to the "Future" half of the film. Key Highlights of the Movie xmen days of future past 2014 dual audio h exclusive