I bought the Meelectronics CW31. Imo it is okay, but not great. Joker on head-fi seems to love the CW31. I like the Panasonic RPHJE355, JVC HAFX40, and Panasonic RPHJE450 better than the CW31. The CW31 is okay, however it just doesn't excite me.
That is the only Meelectronics earphone I have tried. I bough the JVC HAFXC80 and from my experience with that, I don't wan't to try any more microdriver IEMs. In theory they should be great, however I found it very uncomfortable and it didn't sound natural. Some are thrilled with the Yamaha EPH100 microdriver IEM. It is also expensive at around $150.