My favorite is Final Fantasy Eleven. I love how you can combine two class abilities, and a ranger mixed paladin is my strongest. They both are at about 70 right now too! This was also the first MMORPG I've ever played, and it was the best one yet. I don't even have to play the storyline, I can just go around and talk to others, socialize with them and sorts, and these people are fun to chat with.
Also, when I first started, I got lots of help from just random people! Like this one guy, he said he'll help me with my money problems, and teach me some basics, so I don't get blacklisted and sorts. He also gave me so much money! When I got to like level 20, he started joining me in quests with his underclasses. Now we're like about the same, and we camp a lot for Nightmare monsters.
I love this game, and I hope others can enjoy this experience because it's really worth the 13 dollars a month deal. I'll continue to play this until a new Final Fantasy Online game comes out, and then I'll play this game from time to time until all my friends join up with me on the new Final Fantasy.
I rate the game 10/10 since it gives you the greatest experience ever to talk, play games, and especially have some awesome fun.