Recently, I have been looking at a new iem for somewhere under $50.Specifically the cx 500 and the m1. There are many good reviews for both of these products. But I'm not sure about the authenticity of the cx 500 that are available on amazon through headphonejack.
If there isn't much of a difference, or if this retailer is known to be no good, then i would certainly go with the m1 which is being sold by mp4nation. If the difference is decently major, and they are reputable, then i think i would like the cx 500.
I really need some help deciding.