Casca, definitely go for WoW. The universe is so much more immersive and consistent, the classes much more clearly cut and useful, the professions more straightforward, and the questing/grouping system is far beyond anything else. The art direction is also absolutely fantastic.
Not to mention the item system is Diablo 2's, with of course additions and improvements-- huge emphasis on finding, crafting, enchanting and discovering unique and cool items. The fully functioning auction house system is of course pure glory.
But yea, don't go for EQ2. Every single one of my EQ-playing friends plays WoW now, and they all say it is much better (took them a little while to get over their elitism, of course, since they strongly wanted to believe that WoW dumbed down the genre, when it does no such thing... now they all have 6 month subscriptions haha)
This thread reaffirms my faith in the law crowd. Finding people to nerd it up with in a class of ~200 I assume is quite difficult, hah.
BTW jlf, I'm Braise on Stonemaul