Thanks. I just ordered the GTS450 from Newegg, per your link. That's a great price.
The GTX460 is better, of course, but the extra power consumption over the life of the card would probably cost more than the difference in initial price and there's no need for a card that's better than the rest of my aging computer, or better than WoW needs. I can always add a second GTX460 and almost double the performance if I need to because of some other game, but I don't think that will happen.
I appreciate the help.