I have decided to buy a MEElectronics M6 when I noticed there was also a MEElectronics M6 with Microphone/Remote available. Is there a difference between these two in terms of sound quality and durability? And also is the Microphone/Remote of decent quality? I have an iPhone and the Microphone/Remote would be very convenient, but if it isn't as durable as the M6 with out the headphone, I might just buy the one with out the headphone.   With Remote                    ...