Video Audio Intelligence Organiser

I need some help here haha. Anyone wants to help me pick a VAIO that suits me? Please do! The specifications are all below. Tag the choice. :D

*I have only included the important specifications. For aesthetics pleasure, the pictures of the three VAIOs are uploaded here.

Black w/o Cylindrical Hinge on the right: VAIO EA117FG

Black w/ Cylindrical Hinge on the right: VAIO S117GG

Gold: VAIO SR55

Sony VPCEA17FG

CPU: Intel Core i5-520M Processor 2.40Ghz with Turbo Boost up to 2.93Ghz

OS: Genuine Windows 7 Home Premium 64-bit

Hard Disk: 500GB (Serial ATA, 5400rpm)

Memory (RAM): 4GB DDR3 SDRAM (max. 8GB)

Display: 14" Wide (WXGA: 1366X768) TFT Colour Display (VAIO Display, LED Backlight)

Graphic Card: ATI Mobility Radeon HD 5650 Graphics

Dedicated Video Memory (VRAM): 1GB DDR3 SDRAM

Camera: Effective Pixels: 640X480

Disc Drive: Blu-ray Disc Drive

Audio: Intel High Definition Audio

Weight: 2.35Kg (including the supplied battery)

Price: $2199 (inclusive of 7% GST)

Sony VPCS117GG

CPU: Intel Core i5-520M Processor 2.40Ghz with Turbo Boost up to 2.93Ghz

OS: Genuine Windows 7 Professional 64-bit

Memory (RAM): 4GB DDR3 SDRAM (max. 8GB)

Hard Disk: 500GB (Serial ATA, 5400rpm)

Display: 13.3" Wide (WXGA: 1366X768) TFT Colour Display (VAIO Display, LED Backlight)

Graphic Card: Nvidia GeForce 310 GPU with CUDA Technology

Dedicated Video Memory (VRAM): 512MB DDR3 SDRAM

Camera: Effective Pixels: 640X480

Disc Drive: DVD+/-RW/R DL/RAM Drive

Audio: Intel High Definition Audio

Weight: 2.0Kg (including supplied battery)

Price: $2299 (inclusive of 7% GST)

Sony VPCSR55

CPU: Intel Centrino 2 Processor Technology

Intel Core 2 Duo Processor P8700 (2.53Ghz)

OS: Genuine Windows 7 Home Premium 64-bit

Hard Disk: 320GB (Serial ATA, 5400rpm)

Dedicated Video Memory (VRAM): 3GB DDR2 SDRAM (max. 8GB)

Display: 13.3 Wide (WXGA: 1280X800) TFT Colour Display (VAIO Display Plus, LED Backlight

Graphic Card: ATI Mobility Radeon HD 4570 Graphics

Camera: Effective Pixels: 1280X1024

Disc Drive: DVD+/-RW/R DL/RAM Drive

Audio: Intel High Definition Audio

Weight: 2.0Kg (including supplied battery)

Price $2199 (inclusive of 7% GST)