Haven't seen mention of these and thought I would throw them out. Might be more than some are willing to dish out but they work like the cat's meow and you can't ask for a lower profile set of hearing pro that still provides comm's. One goes in each ear and they work just like a set of Peltors/Sordins do. They are great for high noise environments like inside aircraft, while wearing an O2 mask, in a moving vehicle or during a TIC since they use bone conduction and there is no background noise to be picked up. You do have to seat them in your ear properly to get the best result but once you learn how to do it, it's no big deal.
Digital Ears/X5 hearing pro