The ANR models are ok, I guess, but they don't work as well at high frequencies, and most not very well at all if the active electronics fail. If you wear earplugs underneath you'll get more protection, but that defeats the purpose, doesn't it? My solution is to just wear the earplugs. I have an in-the-ear headset, using standard foam earplugs, resulting in overall higher noise reduction than any ANR headset, and vastly greater comfort. No problem with earseals, sunglasses, cap buttons, or anything else. Cheaper, more comfortable, works better - I won't change.