Thanks, that is really helpful. As I will have to block out constant babbling, passive noise blocking is probably the most important factor. That is a really he

Thanks, that is really helpful. As I will have to block out constant babbling, passive noise blocking is probably the most important factor. That is a really helpful overview in that amazon link. Sounds like I should explore the sennheiser line-up in more detail. PS: someone just opened up a package of crisps/chips and is now munching on them. Wonder how active noise cancellation would fare with that.