Rift isn't even worth one month of play. You can't kill WoW by cloning it.
I'm not playing WoW btw. My sub expired last week. If I didn't need to maintain addons, I probably wouldn't even have gotten 85. I've been playing on
Project 1999 for the past 3.5 months now. (I HIGHLY recommended it, btw. Having way more fun than I thought I would. If anybody tries it, send a tell to me on Torven or Torvie)
I haven't raided in WoW since the AQ gate opened, either. (except for some 10 mans, and some Nax kills) As bad as it is -- especially now -- WoW's PvP was pretty much all I've done since '06. (trust me, you guys don't want me in your BG) One thing WoW really got right was the play control and UI. It's just a shame nobody at Blizzard PvPs and that aspect of the game is so neglected.
Played Warhammer for a full month and glad I did. Probably the best new MMOG in recent years if you like PvP, but still had it's problems. I like a lot of what EVE is doing as well, but didn't play past the trial. LotRO and CoH/V bored the shit out of me. Vanguard had potential that wasn't realized and lacked the charm EQ had.
The only new MMOGs I have any hope for are indie games. It's not exactly an indie title, or new, but I've been having far more fun playing on a server developed by a dozen guys in their spare time than I have in WoW since its beta. (PvE wise, anyway) It's the smaller less funded teams that are going to have the balls to do something that isn't WoW. CCP was a nobody before they introduced something radically different; now they run one of the most successful MMOGs. I really really want to see Infinity and Dawntide get off the ground.