Which Sony Vaio do you think is better?

Hello, I want to buy a laptop and I narrowed my choices down to the following:

SVE151190X Performance - 935$

3rd gen Intel® Core™ i7-3612QM quad-core processor (2.10GHz / 3.10GHz with Turbo Boost)

Windows® 7 Home Premium 64-bit

No Fresh Start

Microsoft® Office 2010 Starter

15.5" LED backlit display (1366 x 768)

AMD Radeon™ HD 7550M (2GB) dedicated graphics [$150.00]

640GB (5400rpm) hard drive (Save $5, reg. price $20.00) [$15.00]

8GB (4GB x2) DDR3-1333MHz

CD/DVD player / burner

Standard lithium-ion battery (5300mAh) [$20.00]

SVS151190X Standard - 1020$

3rd gen Intel® Core™ i5-3210M processor (2.50GHz / 3.10GHz with Turbo Boost)

Windows® 7 Home Premium 64-bit

No Fresh Start

Microsoft® Office 2010 Starter

15.5" LED backlit Full HD display (1920 x 1080)

NVIDIA® GeForce® GT 640M LE (2GB) hybrid graphics with Intel® Wireless Display technology [$130.00]

640GB (7200rpm) hard drive [$40.00]

8GB (4GB fixed onboard + 4GB removable) DDR3-1333MHz [$100.00]

CD/DVD player / burner

Internal lithium polymer battery (4400mAh)

Both of these laptops are customizable and I tried to choose similar features, so that they both offer about the same performance. Yet the first one is cheaper.

So my question is can you see a particular difference between the two laptops' features that explains the price difference, and also is the more expensive a better one?