So I bought an iPhone 3G last summer and have learned that 1) iOS 4.2.1 is dumb. 2) I need a new phone. What, in your opinion, is the best pricing, website, location, etc. for a factory unlocked 4/4s/5/5s/5c that doesn't involve me being scammed for a "free" iPhone? Anyplace it won't cost me $450 or the fear of eBay outbidders/"for parts only" in fine print?