Hi there, had two questions for you guys. 1) I just bought Sennheiser HD598s (my 5th or 6th pair of headphones, I only keep one at a time though). I have a Cowon Z2. I have to have these at 45 (for loud music) or 50 (for quiet music) and it's actually still pretty quiet. Not quiet but not really loud. Why is this? Do I need an amplifier? I don't generally listen to **** too loud but I like to have it really loud for certain songs (Pink Floyd stuff mostly, you know...) 2) I've noticed I have a trouble with headphones and comfort. They either start to make behind my ears feel weird or 'pinch' the top of my head. I've had this problem with ALL headphones. Should I switch to IEM's? I Like the piercing highs that IEM's can deliver... I mean I love it, and they're great for canceling out sound too. They're not exactly comfy either though... my ears are very sensitive. What are some "grado sounding" IEM's that you guys would recommend at a fair price? ($~150) that could potentially replace my 598's (if I decide to get rid of them due to comfort, etc.) Also: one important thing to keep in note. The headphone/IEM's main use will be in transcribing music. For any musicians out there, do you prefer IEM's or headphones? Thanks. 3) I lied, there's 3 questions. I know the 598's aren't quite rock and roll headphones but they're the most comfy I've found. I had grado's and ---HATED--- them comfort wise. Couldn't use them. Is there anything out there that sounds like Grado's but not as intensely uncomfortable? I'd sell my 598's and get em.. The 598's are quite nice though with hip-hop, the snares and bass drum sound absolutely fantastic. Thanks guys, love this forum, everyone's always very helpful.