I've only ever played PSU, so i don't know what really differs between each one. I played PSU for like 6 years tho, and for the most part enjoyed it. I'm not big into MMO's, but PSU had a unique combat style i enjoyed. It seemed more interactive than other ones that i have tried. I'm planning on putting like $2k into a computer. Mainly for this, but i still wanna be able to play everything on the highest setting with good fps. Before i do that, i wanna be sure I will like the game, lol. If someone could give me an insight on things i would like and thing i wouldn't like, i would appreciate it.