Xtenzi USB Audio Video Cable for Ipod ,Iphone , Ref # JVC Ks-u30 Ksu30
As others have stated, the actual iPhone connector is shoddy.  You can literally rip the hooks that clip into the phone, or the casing becomes loose and crumbles in your hand.  Even knowing this and being careful, it still came loose.  I fixed it by putting some electrical tape, cut to precision and then rubbing a lighter flame over the tape to seal the edges and it's ok now.  -2 stars for being cheap.  The USB works just fine as expected and the cable has good length.