The champ is here.
http://tera.enmasse.com/news/ launch-schedule?utm_source=tera=launcher=gumball=launch-sche dule
Download it. Sit through the 3 hour patch ( don't worry, it's worth it I'm sure ). Log in at 12:00 PM and be amazed. If you're still confused as to whether you should try TERA Online or not, watch this video and try to think of an MMO with better looking combat.