Recently i was in the same spot as you. Never played an mmorpg before so figured i should try one. This game had a fun leveling experience, practically get exp for anything you do. No sub fee, beautiful graphics, level scale so when you reach level 80 you can still go to low level zones and be challenged. HUGE world, jumping puzzles, personal storyline so you can make more than one char with a completly different story from your other.
Hope this helps you decide