Im looking into added some deadener to my system this weekend when i get paid, and was told on an old forum i made awhile ago that the KNU was the best "bang for your buck" deadener. Im wondering however if it is truely a decent deadener. If so ill probably just pick up a 2 door kit of the Kolossus Edition for 60$ to get started. If you dont think this deadener is worth it, please further guide me, im looking to hopefully spend no more than 100$ to do my front doors