Out of the above choices, overall, what is your favourite/most used format?
Get a pair of IE8 headphones instead of the standard Apple ones and you'll notice the differenceLol you're staying away from the mp3's! Bleh don't really matter to me, mp3 gives alright quality and usually played from my phone through headphones , not much you can really tell from the quality...well to me . If it's lower than 160 kbit/s then it makes a difference to me .
Hd280 Pro's or the like.Get a pair of IE8 headphones instead of the standard Apple ones and you'll notice the difference