Controls feel much better since DS2 as well. Movement is a lot more fluid. I say it's worth playing all three if you like that type of game, because it's not like there are that many decent cheesy sci-fi "horror" games. Definitely not for the story though, simply for the fun you'll have with them. I think anyone who plays Dead Space games for the story or even horror is making a mistake. DS was always an action game with some cheesy horror background and a garbage story, kind of like Doom 3, which I also enjoyed. No, it's not "real horror" but pointing that out doesn't make one look smarter. Not everyone always needs to be really scared. Sometimes it's just fun to have some gory action with a cool atmosphere ripped off from some cool movies.