[mgkimsal]

Can't say about the Sony, but you can't sleep in Bose QC20. Well... you can, and they were pretty comfortable, but they'll very likely break pretty quickly. I went through several pair until I finally twigged that sleeping in them was probably the root cause. Have had fewer problems with the QC20 since not sleeping with them in.

[TylerE]

Really, for sleeping just get a good set of passive earmuffs like shooters use. Cost about $20 and will provide 25-30db of real noise reduction (and unlike active NC will also work on non-periodic sounds like sirens or revving car engines). Can double up with foam earplugs too for even more blockage.

[dahfizz]

Where do you people live that you need ear muffs capable of deafening gun shots just to sleep??

[TylerE]

Anywhere noisy? When used around guns that don't (nearly) deafen them, just bring them down to non-damage causing levels.

[mgkimsal]

FWIW, I use cheap dollar store headphones - $4-5 - with white noise from the phone to sleep. they typically last 1-3 months.

[nitrogen]

I found that my Bose NC headphones would produce deafening feedback squeal if I rolled onto my side, so beware that possibility.

[mgkimsal]

oh yes, without a doubt, I'd noticed that in some cases, and eventually, if/when they 'crack', it's just a tiny sliver of a hairline crack in one which lets air in and produces that same loud feedback squeal. ouch!