Sounds like you could just get the USB version
Although if the cost difference isn't big for you, think about getting the iPhone version just in case Apple decides to drop the feature.
Well the issue is not the price différence but the fact that i also have an AK100 ( Toshlink) as alternative source ! . So thé LX Will allow me to use iPhone AND ak100 ... If iOS7 works 24/92 through USB !