So my family is insisting that I should just buy an already built pc instead of building my own. They keep saying I should just buy this SYX Venture SG-310 Performance PC - Intel Core i5 3470 3.2 GHz, Genuine Windows® 7 Professional 64 Bit, 2GB NVIDIA GT 640, 8GB DDR3, 1TB 7200rpm HDD at TigerDirect.com. Is my rig substantially better than this one?