with X1 everything will carry over and there will be backwards compatibility but not with every single game as for both consoles you mainly want to think about what are most of your friends playing on what control do you like the most, this is down to your own opinion so don't let idiots around here try selling one control as fact PS4 controls they are a bit smaller and have a nice little sensor bar with it and a light that changes color with certain games, batterys don't normally last that long so you may spend a lot of time with a cable in but you can open the control up to install better ones Xbox controls are larger, they have a built in battery pack so no lump and it can be easily opened via a door to change batterys so no need for that cable PS4 has better graphics and fun features like share play and can record longer videos than X1, X1 is more about multimedia, you can do two things at once on the same screen exclusives, depends on what you like for which one has more for you, exclusive games (infamous, Halo), exclusive, timed exclusive content (Destiny, Fallout 4) problems PS4 tends to get more down time than X1 both can get random game crashes with X1 sometimes just locking up X1 can get a problem that apparently came in with an update where the control randomly disconnects for about a second if the PS4s power gets cut before it fully turns off it has to go about a check next time it is on party random disconnects/nat type issue on both