MH1C's don't have fakes AFAIK.
Due to various complications, the MH1C's were sold off as bulk instead of being sold with Sony (Ericsson) cellphones.
Well, these MT300 are warm and dark. But they do have nice ringing mids, if that's what you like. Not so much in the upper mids though. While the MH1C is technically superior, there's quite a lot of both bass and treble going on. Personally, they give me headaches. Most frustrating, as many pointed out, is probably the J-cable.
All in all I'd say I still go for the MT300 more than the MH1C. When you don't seal them in completely, there's a bit more treble and less bass. That said, many of us that used MT300's used them with MH1C tips.
I do find the TDK TH-EC250 a step up from the MT300, specially if you're looking away from the bass type. Not sure if they're anywhere near available in the West though... and the cables are even thinner than that of the MT300 hah.