Historically I haven't been a fan of hearing protection when working outside using anything...lawn mower, trimmer, tractor etc. I hated the sound of hearing me breathing (mostly huffing and puffing) when I had regular foam ear plugs in. I have over the past few years tried all sorts of devices, but nothing really seemed to stay in my ears consistently, never used the big over the ear muffs, I don't like the way they feel when they go over my ear and you sweat WAY too much. I'd have to constantly readjust the foam or the rubber type ones for one reason or another. I have watched many of the TTWT videos with the Isotunes, and thought they might be the one to try. Ended up getting a set of the Pro model for my birthday. These ARE the ones I've been looking for. The sound is just as good as my Bose earphones, no problems with the Bluetooth staying connected while working a short distance away from the tractor, and they really do cut out a significant amount of the excess noise. Even with music (or talk radio) playing, you can still hear all the other noises that you'd want to hear while using them as well. Customer support is top-notch (mostly on facebook) everytime I had a question or concern. These stay right where they should be, and never needed to be readjusted at all.
Sometimes I'm skeptical about a product that is "plugged" by someone using them and with them being a small company, but there are no concerns.
If you are thinking of getting any type of protection, do yourself a favor and get a set of these.