I like to sleep with earplugs in (noisy neighborhood)... so I use my iPhone and those new $80 Apple in-ear headphones. But they SUCK! They have NO BASS and they tend to slip out while sleeping. I prefer an earphone that has a mic so I can use it with my iPhone but I'll settle for one without it if it has a dynamic range, feels comfortable while sleeping and stays in the ear when tossing and turning in bed. I like highs and I like lows so I'd like something dynamic. Not just a one trick pony.