I got me some peltors for christmas, they are yellow with a 22 decibel noise reduction rating. Are these the same ones I see most people using? I had a hard time finding them, checked, lowes, home depot, walmart, etc. I finally was able to find them at meijers(these are mostly in MI, some in IN and OH i think) of all places. I got them for around 55.00, but I see places like grainger.com had them for almost 100.00. Do they have different noise reduction ratings? Is 22 enough that you can still hear the radio over the beautiful purr of my 19 kawai? I think I'll try em next time i snowblow the driveway and see how they do.I also looked for their website, but found nothing on it about the worktunes.