Discuss everything headphone related.
Computer-wise, I use a USB headset with a microphone my dad gave me. It's years old, but still works great.
iPhone-wise (inb4productwarsinb4opcantinb4), I've gone through many sets of earbuds. I bought two pairs today to replace my old pair, one Sony, one Phillips, same price. Bought both because I couldn't decide which, figured I'd use one pair (I'm testing out the Sony right now) and wait until it died, than use the other and mentally compare them.
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Sennheisers HD 595 here, loving them.