I've had the ADDIEM for quite a while now, longer than I've been a member here. After upgrading my home full-size setup, I decided it was time for a good portable set. I first tried the MTPC. I got them refurb, so I figured it was a small gamble. Not my cup of tea at all. Flabby bass, hit-and-miss midrange, and just plain "weird" treble.
Next up was the ATH CK10. I had high hopes for this one. I used every conceivable tip with these, Sony Hybrid, Monster Triple Flange, Dual Flange, Comply... you name it, I tried it. While I did enjoy the added detail over the ADDIEM, the 10k treble spike was just too fatiguing to me. Many songs, even well recorded ones, became sibilant. They also had much less bass, with any tip, than the ADDIEM.
I will mainly be using these with my iPhone and iPad. I travel a bit, so having something easily driven by these iDevices would make my life easier. I enjoy having the mic and controls more than I thought I would, especially when traveling. My tastes in music are wide ranging. Right now I have Lamb of God, Derek Trucks, The Beatles, Death Cab, Bob Marley, Deadmau5, John Coltrane and a Tchaikovsky Living Presence album on my phone.
I'm thinking of giving Etymotic a shot, but I'm open to all suggestions. Price really isn't an issue, I just want something that works.