So, I was wondering which one you would prefer to play the most and since I loved RF Online, which you think would be the most similar and why? I need some game to kill the time that's left til GW2 :P

Vids:
seven core: http://www.youtube.com/watch?v=5-0NDifHwjQ
bounty hounds: http://www.youtube.com/watch?v=okmC4orZUkE
ARGO: http://www.youtube.com/watch?v=DE2QVqioeo0