from the options listed below, please tell me which would be the best buy.
HP G62
PROCESSOR:INTEL CORE i3 350 2.26GHZ
CHIPSET : MOBILE INTEL 5 SERIES EXPRESS CHIPSET
MEMORY : 2048MB DDR3
HARD DRIVE : 320GB SATA HARD DRIVE 5400rpm
DISPLAY :15.6" HD 1366 x 768 PIXEL RESOLUTION
OPTICAL DRIVE
VD±R/RW WITH DOUBLE LAYER SUPPORT
HP PROBOOK 4520S
PROCESSOR: INTEL CORE i3 370 2.4GHZ
CHIPSET :INTEL® HM57 CHIPSET
MEMORY : 3072MB SUPPORT UPTO 8GB DDR3
HARD DRIVE :320GB SATA HARD DRIVE 7200rpm
GRAPHIC CARD : ATI MOBILITY RADEON HD 530v WITH 512 MB DEDICATED
DISPLAY :39.6 cm (15.6") diagonal High-Definition LED HP BrightView
OPTICAL DRIVE : LightScribe SuperMulti DVD±R/RW with Double Layer Support
WEIGHT & DIMENSION: 14.72"(W)x 9.70"(D)x 1.25"(min H)/1.44"(max H)
HP PAVILION DV6-3110SE
PROCESSOR:INTEL CORE i3 350M 2.26GHZ
CHIPSET :INTEL® HM55 CHIPSET
MEMORY :4096MB SUPPORT UPTO 8GB DDR3
GRAPHIC CARD :ATI RADEON HD 5470 512MB DDR3 DEDICATED GRAPHIC
HARD DRIVE :500GB SATA HARD DRIVE 7200rpm
DISPLAY :39,6 cm (15.6") diagonal LED-backlit HD Anti-Glare 1366 x 768
OPTICAL DRIVE :LightScribe SuperMulti DVD±R/RW with Double Layer Support
DELL INSPIRON N5010
PROCESSOR:INTEL CORE i3 370 2.4GHZ
CHIPSET :MOBILE INTEL 5 SERIES EXPRESS CHIPSET
MEMORY :4096MB SUPPORT UPTO 8GB DDR3
GRAPHIC CARD :ATI 5000 SERIES 1GB DEDICATED GRAPHIC CARD
HARD DRIVE :320GB SATA HARD DRIVE 5400rpm
OPTICAL DRIVE
VD-SUPER MULTI DOUBLE LAYER DRIVE
DISPLAY :15.6" HD 1366 x 768 PIXEL RESOLUTION