So, I had this weird idea today. I don't usually use my iphone as a music player except when I'm driving long distances. Since I already want to upgrade to the 3g one when they come out, I was thinking of unlocking and selling off my current 8gb iphone and buying a refurbished 4gb iphone. Unlocked iphones go for about $450-500 last I checked and a refurbished 4gb iphone can occasionally be bought for about half of that. Whenever the newest 3g iphone comes out, I would sell my 4gb iphone and get the 3g one. Does this make any sense at all? I guess what i'm looking for is the best cost effective way of having an iphone right now while also knowing that when 3g iphones come out, i WILL be upgrading. Ideas?