The title says it all.
I need enough isolation to use on a bus (these are a compromise for me - instead of earbuds AND NC headphones, it get IEMs), but SQ is also a priority. After searching around, it is down to these two IEMs, but I can't quite decide.
I like a detailed, middy sound usually, and I don't like overpowering bass. I'm using a 6th gen iPod classic if that makes a difference.
Ideally these would be durable enough to carry around in my pocket all day.