I would definitely go with denon c551, i tried my father's cx300 for about a week and found them too bassy. Bought the c551 and love the sound, however i found the stock tips terrible, they would not seal and as a result i had no bass. I replaced them with philips tips and all became well, good...

HD201 are confortable, i mainly used them to watch TV, never tried them for music, they costed about 20€ a few years ago, and i never really considered them for anything else then TV. On the Ubuntu matter, just upgraded from 7 to 8, and liked it. But mostly use Fedora though. dual booting is...

I use my sony 618 with Denon C551 at around a setting of 6 at home with flat EQ. Don't imagine i'll be going over 10 when outdoors (just got the phones). Don't know exactly, but that dynamic normalizer thing sounds weird to me. Music is supposed to have louder and quieter parts. Messing with...