Well i have played MMO since 2000, starting Daoc, Eve-online, and offcourse WoW
but for a couple of weeks now im playing EQ2 with the new expansion Echoes of Fayder.
the price is very cheap (30$ or so, with EQ2+3 expansions) and i must say very well worth it.
good pvp servers and the pve and questing completely blows WoW out of the water
for a free trial see
www.playthefae.com
i like it, many people seem to switch from wow to it, and the servers are packed.
and the good thing is, you can play it very casual!