Yeah, but can such a tiny thing really drive cans like those? Seems like you'd really need to amp it.
For me, my main portables are a pair of Denon AH-C551 canalphones. I like them very much. As backup, I have the Sony MDR-EX082s which I got with my NWZ-A818 DAP. They don't come close to the C551s, but are still really good for pack-ins. And I acually prefer the EX082s when listening to audiobooks and such, because they're less sensitive which almost completely hides the A818's hiss. With the more sensitive C551s the hissing becomes more noticable, but really only when it's completely quiet around me. If there's any noise, the hiss can't be heard. That's also true if the music I'm playing is a little more intense, then it drowns out the hissing. But as I said, for listening to audio books in bed before sleeping (a very relaxing excersize for me), I actually prefer the EX082s.