The ety's were good at what they did, but the complete lack of bass kinda killed them off me. At the time that I had them, I sort of shrugged it off, because I kept telling myself that bass wasn't my thing or that important to me. After getting some more bassier phones, I noticed that it really did make quite a difference in my enjoyment of music. I've heard the e4c's and in my opinion, I think they are the best IEM's on the market today. I only have the e2c's personally, mainly cause I don't have the funds to purchase my own pair of e4's...