Good to see that you can put English to good use, especially with a great nickname like yours Wordy. Try formulating a proper reason as a forum is for debate not just for random words.
Back on topic. @Margaret How can you comment on something thats not even out? It would be like me commenting on Mines of Moria with no concrete evidence.
Buying a game should not be based upon something that may happen in the addon. I'd personally get a trial for both games and then choose. I do prefer WAR but thats a personal opinion. The fact that to get WoW as well will require you to buy the game and all the addons and then another addon would personally put me off. It's also a very old engine now so if you want the latest, next gen graphics and effects you aren't going to get them.
As for chris's comments about smoothness it should be known, because of the aformentioned engine, that WoW will run better than WAR on aging plaforms. However it should also be noted that WoW doesn't look anywhere as nice as WAR. IMHO LoTRO is the best looking MMO out there at the moment however the gameplay isn't as good as WAR's. I'd suggest that WAR was a very happy middle ground in terms of great looking graphics and superb gameplay.
M.