I'm heavy into rock, southern rock, prog rock, jazz, acid jazz, blues, funk and a bit of classical sprinkled in. It all sounds good on the Xelento. The Xelentos are a little warm with thick bass, present mids and good treble response. I'd call them an intimate presentation. Not particularly wide or high but they have depth and present with musicality. They really do make a good all rounder but they probably get the least amount of use now as I spend a lot of time with my RAH's and Fusions both of which are wider, taller, deeper and have better extension & sparkle up top. Frankly, I'm looking for a Mega Value chifi that I can sleep with when I travel. That's why I ask about the fit of the KXXS, I figure the KATO will have similar profile and perhaps improved. If you can sleep with the KXXS inserted, good chance it's possible with the KATO as well. But truth be told, I could be happy with anything I've got at present and just stop buying, alas I keep reading these threads and keep getting sucked in.....