Xathom :
Just so I can get an idea of the laptops, what are the max settings that each one would run? (between the one hang-the-9 suggested and the 2 I have listed)
WOW does not take that much power to run, even at medium settings, even a standard office laptop with an i5 chip and no extra video power will be able to run it at Medium, maybe with shadows off and some other effects lower like AA and AF off. But there is no sense in getting a LAPTOP that is not the best you can possibly get and settle for a lower model that will just barely reach to what you want to do with it. It's not like a desktop where you can buy a cheaper system with a low end video card and a year later add a faster video card. Unless you buy a $1,500 laptop, you are stuck with the video card you buy it with. Spending $100-150 more now will lead to a lot better results for you. You won't be going around a year from now saying "man, I wish I had a faster laptop for this new game", or "why can't I turn up quality more?".
I once spent $300 on my computer speakers. But I have never in the 10 years since I got them wished I bought another set. If I bought a decent $100 set I would have probably gone around and bought a better one anyway later, just spending even more money. Every time I listened to them I am still impressed with the quality, even comparing them to newer high end PC speakers. If you go with a lower laptop model, pretty soon you will thinking about something better. Happens all the time when people buy cheap slow netbooks, you soon see them trying to sell them on craigslist and going out to buy a faster system.
The ASUS I linked will play WoW a lot smoother at all settings and will play it on High and maybe even Ultra well (I'd say at least 30fps steady which is all you really need for WoW)