i'm currently ready to buy a new laptop, but in torn between which to get?! the 2.53 15" (higher Spec) or the 17" both will have the processor upgrade and i will be buying a 3rd party 7200 hhd. i currently have a home setup of a macmini linked to a 23" ACD. This serves as my tv and screen for playing my wii thru. I will be upgrading mac mini as soon as the new ones are available and also the screen to as the mini will hopefully support the 30" my point is will the be any noticable different between the 15" and 17" whilst playing say hd movies on the 30" Screen? is there really much difference between the 15" and 17" except for the extra usb and bigger screen? i don't really want to spend that bit more on the 17" to only find that its really hard to carry arround/use on my lap and not that much better than the 15"