Miscellaneous laptop discussions : Gateway P-7805u FX vs Apple Macbook ($1699)

Gateway P-7805u FX vs Apple Macbook ($1699)

Hi all, just looking around for a few laptops. I've narrowed my search down to two, but i can't seem to make a definite decision on either one of them. I will be using this laptop for my grade 12 year and then university. Here are a few points i'm looking at

OS: love the mac osx, but not a deal maker as i can take care of a windows os and keep it running smooth. also, windows 7 is coming out soon (end of the year?) and might want to get a hold of that

Case: portability isn't a huge issue. i know that the gateway is a much bigger system and won't be lugged around often. both systems look amazing. apple with it's aluminum casing and gateway with it's signature style

Speed: specs wise, the gateway has a big advantage to speed with it's 4GB DDR3 ram, but 2DB DDR3 for the macbook isn't bad. i'm wondering, over time, will the 4GB still prove to be better?

Gateway P-7805u FX:
4GB DDR3 RAM
320 HDD 7200rpm
9lbs
17" WXGA @ 1400x900(might get lucky and find a 1900x1400)
2.26GHz Intel Core 2 Duo P8400
Nvidia GeForce 9800M GTS
$1149 @ Gateway

Apple Macbook (greater one)
2GB DDR3
250HDD 5400rpm
2mg
13.3" 1280 x 800 ( WXGA )
Intel Core 2 Duo 2.4 GHz
NVIDIA GeForce 9400M Shared video memory (UMA)
Around $1699 CAD

Please someone, point me in the right direction. and also, to you apple fanboys, i would like a better explanation than "apple is awesome, get it"