I'm willing to stretch my budget a little as i use my headphones between 3-5 hours a day.

Is there any benefit to the ear to getting a decent pair of headphones? I preferred the in ear buds due the partial noise cancellation (In turn not needing to turn the music up louder to cut out outside noise) but beyond that i wonder if it's really worth spending $200 on a pair on headphones? I'm not exactly an audio engineer so all i'm after is some semi decent sound with some actual bass (compared to the shit-tastic standard iphone buds).

Are the apple buds really any good? Be interested to see if they were...

EDIT: Found these that are supposedly comparable to the CX300's, are they any good? :
http://headphones.com.au/psingle?productID=351
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