948 will be my vote.
Well, I don't know any other than Runescape, and it kinda took my mmo virginity so I'd say it's the best free to play with no downloading.
Age of Conan is nice, but my vote goes to Aion cause it became the love of my life the moment I set eyes on it.
If there are any left I'd also appreciate having one, for now I'll go around the forum... looks like a good forum :D thanks in advance even if...