Hmmm, hold on a sec, is Ocharaku actually tuning the Audio Technica ATH-CKM55 in 9 different flavours? Isn't that the IEM which received a lot of hype-da-hype around here? I almost picked one up but Tomscy2k advised me not to. =]
Since I have a severe lack of Audio Technica IEM's I ordered the CKM33 recently, however. It should arrive any day now.
I would advise you not to.
The CKM50 received the hype, and I didn't like it much. The CKM55s are worse sounding IMO, with the boomy bass overpowering everything else.