URGENT: The final chocie

Hello you may remember me from other comparison threads... but this is my final one i swear... haha Choose between these systems!

1) Dell Studio XPS
Intel® Core™ i7-720QM Quad Core Processor 1.6GHz (2.8GHz Turbo Mode, 6MB Cache)
4GB Shared Dual Channel DDR3 at 1333MHz
ATI Mobility RADEON® HD 4670 – 1GB
500GB 7200 RPM SATA Hard Drive
9-cell
@$1300

2) Dell Studio 15
NEW 2010 Intel® Core™ i7-720QM Quad Core Processor 1.6GHz (2.8GHz Turbo Mode, 6MB Cache)
4GB Shared Dual Channel DDR3 at 1066MHz
ATI Mobility Radeon™ HD 5470, 1GB
500GB SATA Hard Drive (7200RPM)
9-cell
@$1139

3) HP 15.6" Laptop (DV6-2174CA) Futureshop
Intel Core i7-720QM
4GB DDR3 (Expandable To 8192MB)
Nvidia GeForce GT 230M, 1GB
640GB 5400RPM (I dont care about 640> 500 gb)
6-cell
@$1199

4)Gateway 15.6" Laptop (NV5909H) - Black Futureshop
Intel Core i3-330M
4GB DDR3 RAM
ATI Mobility Radeon HD 5650
640GB 5400RPM
6-cell
@$750 **Reason i put this in is because gfx card? not so sure about the processor there tho let me know in ur posts

Sooo out of the 4 let me know the best... I am mostly going to use at university (so decent battery) but i also play games so gfx card needs to be good, and that is what i am mostly confused about which of these basically has the best gfx card... of course overall performace to price matters

This is urgent because the deal on one of em ends tommrow
Thank you!

No need for 2 threads with one subject,ask all of your questions in your previous thread
http://www.tomshardware.com/forum/ [...] comparison