It's all in your opinion. WoW is better for people who like the Warcraft style, and EQ2 is better for people who like the realistic style. I'm personally a big fan of the Warcraft series so I got WoW, but it's totally up to you. Try them out if you …
Because Blizzard has tons of Warcraft fans, a MMORPG of Warcraft will captivate a good number of those them, plus everyone who trys the game out of curiosity. Guild Wars also looks cool but is an untraditional MMORPG. People don't always like change…
I'd say World of Warcraft, but I'm a mega Blizzard fan so that's just me. do research, look for trials, or maybe a free one, I'd say Runescape, but that's just because I've played it. Check out the Game List link, it helps a lot.
Tasidar
I don't think WoW will do much if anything to the WarCraft story line other then give you a first person look at the world. I think WC4 and SC2 are very likely.