Hey guys which pc is better http://m.bestbuy.com/m/e/product/detail.jsp?skuId=4894219&pid=1218573502544 or http://m.bestbuy.com/m/e/product/detail.jsp;jsessionid=4537DBB998702AB6152DD02417E442E5.bbmdotp-app31-43?skuId=5099843&pid=1218611373500 bit I think I will buy a prebuilt because I don't know how to build a pc but If I did is there a build where I could get something better for under $600 thanks.