which laptop is better?

MSI GX620 15.4″ Turbo Drive Gaming Laptop Nvidia 9600-GT 512MB + Turbo Cache P8400 2.26 Ghz 4 gig 320 gig HD
Display: 15.4″ WXGA (1280 x 800) TFT display ACV(Amazing Crystal Vision) Display
•Operating System: Genuine Windows Vista Home Premium / Windows XP
•CPU: Intel® 45nm Montevina Core™ 2 Duo Processors P8400 – 1066MHz FSB
•GPU: NVIDIA® GeForce® 9600M-GT 512MB DDR3 + Turbo Cache-With Support For Microsoft® DirectX® 10
•System Memory: Up to 4GB DDR2-800MHz Dual Channel Memory
•Hard Drive: SATA Hardrive support up to 320GB
•Optical Drive: DVD Super Multi (DVD+-RW/ CD+-RW)
•Communications:
Intel® WiMAX / WiFi Link Ready
Built-in Gigabit Ethernet LAN and Modem Module
Built-in 802.11a/g/N WLAN Card / Bluetooth
•Analog Line Out / Digital 5.1 Channel S/PDIF Output Recognized and Approved by the Highest standards of Dolby®
•E-SATA connector
•HDMI connector (1080p supported)
•Built In 2.0 Mega Pixel

or

MSI GX720 17″ Turbo Drive Gaming Laptop Nvidia 9600-GT 512MB + Turbo Cache T6400 2.0 Ghz 4 gig 320 gig HD
?Display: 17″ WXGA (1680 x 1050) TFT display ACV(Amazing Crystal Vision) Display
?Operating System: Genuine Windows Vista Home Premium / Windows XP
?CPU: Intel? 45nm Montevina Core? 2 Duo Processors P8400 – 2.26ghz- 1066MHz FSB
?GPU: NVIDIA? GeForce? 9600M-GT 512MB DDR3 + Turbo Cache-With Support For Microsoft? DirectX? 10
?System Memory: Up to 4GB DDR2-800MHz Dual Channel Memory
?Hard Drive: SATA Hardrive support up to 320GB
?Optical Drive: DVD Super Multi (DVD+-RW/ CD+-RW)
?Communications:
Intel? WiMAX / WiFi Link Ready
Built-in Gigabit Ethernet LAN and Modem Module
Built-in 802.11a/g/N WLAN Card / Bluetooth
?Analog Line Out / Digital 5.1 Channel S/PDIF Output Recognized and Approved by the Highest standards of Dolby?
?E-SATA connector
?HDMI connector (1080p supported)
?Built In 2.0 Mega Pixel Camera

I am trying to decide which one to buy but I am not really sure which one would be better.

thanks!!