Spend the extra and get the 3770k, its worth it in the end. the 8350 just dosn't hold it's own.. unless you are doing some media production. Mine use to kick add coverting video to other codecs where my 3770k is horrible at it, but it's completely flipped in Gaming.
Wanderer is right, if your going to have the background processes, the 3770 will not lag on you while gaming.