CCA CKX IEM

I too have a pair of CCA's, the C10. I use these as IEMs for my band (I play drums) and they are really nice. Like @InvisibleInk said, they are a little bulky and can get a little uncomfortable, but I threw some Comply foam tips on and they just work. They aren't overly heavy on bass, but with the foam tips properly sealed, it comes through nicely. These are great, more moderately priced options if you don't want to get into the $350-$850 range and there really isn't any diminished return to note, at least in my case. Edited to add: I did replace the cable straight out of the box with a no-name 8 core and have had good results.