A quick glance and reviews of the MMO's I have played:
Gods and Heroes: Great game, I liked it, no one can be sure on to what it would have become.
Age of Conan: Great in theory, but we need the devs to knuckle down and start doing things quicker.
WoW: Great game if you like the same old stuff each day, the community is pretty ordinary.
Eve: It's a great game for people who like that sort of thing - sci-fi sandbox, the quests are quite dull but what you do is what you do, there's endless possibilities and it takes a lot of time, which is kind of meh if you want to wait around doing nothing until you have the right skills.
Guild Wars: Boring to me, I didn't know if there was any end-game, it's quests are unique and has a whole storyline but I just got bored and the graphics are too anime-like for me.
PotBS: I didn't like it.
SWG: Too hard, quests and map sucks, I really couldn't find head from tail.
EQ2: Tries too much to be like WoW.