Thanks for review mbamg.   I've made up my mind. I will buy the Brainwavz M1 due to their slighty better SQ and isolation.   

Hi guys    I've read tons of reviews of these earphones and i can't choose between them, can you help me making a decision?   I will use Sansa Clip Zip as a music player. Could be any  trouble with the 32Ω impedance of M1?   For owners of E30, How mediocre is their isolation?  ...