I will toss my hat in the ring.
Mac books are great machines and as Photon says their quality is really second to none. However, you mention you need to just do simple tasks like word, and internet. As a result if you buy a Mac, you will be paying for a lot of great hardware that you really don't need.
The simple fact is that a laptop is a disposable device. You will only get 3 years on average of use out of any laptop you buy, a little bit more if you are not looking for high performance use. Add added chances of damage due to dropping, bumping, etc \.
Take
this dell 10" laptop, you can get even the most customized model for $400, or a base model for $300. Also, consider
this 15" model, the base model being $400 some reasonable upgrades bring it to $600 - $700.
Now look at a
Macbook. If you check here, the 13" models starts at $1099-$1299. A 15" Pro model runs $1799. I don't doubt they are fantastic machinces, but even Apple says right on that page these are High Performance computers. You don't need high performance to surf the web, or watch a DVD, or even play basic games.
So by considering these numbers, you could buy a mid range Dell Inspiron which is probably still overkill for your needs for half the price of a Mac.
If you were wanting a high end laptop, I would totally say to consider a Mac but as these number say. Unless you are interested in the 'cool factor' of having a Mac, it doesn't make sense to spend twice as much money, for way more than you need. It would be like driving a Porsche instead of a Honda to drive 20 mins in rush hour back and forth to work everyday. It sure will look cool, but you really are not getting the use out of the car that you paid for.
Regardless of the route you choose, always compare the prices online to in the store. I have found online purchasing actually causes less headaches if you need future because if you expect to go to BestBuy and have them fix your computer half the time they will end up referring you to call Dell anyway.
Another thing, you can probably get a RAM upgrade for a lot cheaper than what Dell or Mac charge, so check it out at
www.crucial.com to make sure you are not getting ripped off. Consider doing that upgrade separately after you purchase.