Indieman's Head-fi review of the MEElectronics M6 Pro is pretty indicative of the quality MEElectronics kick out wallet-friendly prices.

“While the sound and design is not a radical departure from the original m6, the pro distinguishes itself in several other factors. Probably the most radical being the removable/replaceable cable. This is a first from MEE as far as I know. The pro comes with 2 cable variations, the first being an audio only with a slightly more durable factor. The other cable includes a mic for using the pro as a headset. Both cables are of high quality and a suitable length. The original m6 cable was almost perfect in my opinion, and the newer audio only cable included with the pro completely nails it. I have to say it’s the perfect iem cable. It’s awesome. The pro also includes all the usual tips that come with most MEE products (already a robust package) and adds some Comply foam tips for ultimate isolation. With so many accessories included, a normal MEE iem case just would not suffice. Thankfully MEE ALSO includes an extra large semi-hard shell zipper case that not only is big enough for the iem and accessories, but also a small DAP and maybe even a micro sized amp!”