I just wanted to throw it out there that I received my order placed from Newegg for the MEElectronics Ai-M6 today, and though I had no intentions of testing them, I did inspect the contents of the package. I discovered that the M6 I received is clearly the newer model with improved build quality, as made apparent by the silvery cable sheathed below the memory wire, as well as the L-plug on the end of the cable.
I bought these earphones for my brother, since they seem like a great value for the performance they offer. Since they are a gift, I will not provide a critique, but I still wanted to advise fellow members that I received a newer model of the M6, so perhaps you will too.
For $25 and apparently improved build quality, this ended up being a killer deal. Thank you for posting the deal OP.