Thanks for the advise guys, A990Z looks great but is above my price point for a headphone that isn't my primary for intentional recreational listening. I decided to pick up the M40X--I liked the reviews I read, price point is very reasonable, and they look sturdy. I'll post an update this...

I'd appreciate some recommendations for some closed back headphones, preferably from about $50-$150 that work well monitoring when recording, and I will use largely when composing/producing music on my laptop and listening to music when I'm in coffee shops and the like, or when I want to listen...

Thanks everyone, I'm just going to go order ER-4Ps. I just wanted to make sure I wasn't missing out on anything else. I mean, $160 is a good value compared to some high end IEMs, but its still a crapton of money. But they're honestly well suited to my tastes, budget, etc. Time to stop worrying...

I have seemingly lost my ER-6 headphones, and even if they do turn up, I'm interested in an upgrade from them. So there's the matter of what to upgrade to. Is there anything I'm likely to like better than the ER-4Ps at a roughly comparable price? I generally liked the sound of my ER-6s...