Which laptop do you think is a better choice?

Up until now I’ve wanted a 3.06 ghz 15 inch macbook pro…but now there is a new one I like that has almost exactly the same specs except it doesn’t have as good graphics but it has bluray, and its about $500 cheaper. Its the Sony Vaio FW…I really wanted a Macbook Pro because of the lack of viruses, great quality, great customer support and OSX. I want the Vaio because its cheaper, has a blu-ray player. What should I do?

http://www.sonystyle.com/webapp/wcs/stores/servlet/CategoryDisplay?catalogId=10551&storeId=10151&langId=-1&categoryId=8198552921644570896&parentCategoryId=16154

http://store.apple.com/us/configure/MB986LL/A?mco=MTA4MTgyNjQ