Good times. Like Aaron, I've had my hands on both the Audio Technix product and Damplifier/Damplifier Pro. The adhesives are VERY different. The widely thrown around assertion that AT and Damplifier are the same comes from some cherry picked results published by the owner of AT purporting to show very similar performance. There's no way to know what any of this really means since he chose not to release the full report. Nothing on when and where he got the sample of Damplifier, etc. Testing a competitor's product introduces all sorts of variables - intentional or not. "Results" like these should be rejected and not accepted as proof of anything. The ethics behind this move are troubling to me. This is the same guy who tore chunks of adhesive off of some RAAMmat BXT II, posted photos and said he wouldn't trust it in his car. There are reasons manufacturers test each others products and there are reasons they don't make the results public. Understand that the claim that they are the same thing is contradicted by the evidence presented to support the claim. One is a 40 mil product, the other 60 mils. If the published results are correct, the proper claim would be that the two products performed similarly in the test. The fact that it took different thicknesses to achieve that level of performance is absolute proof that they aren't the same. A point that gets missed on all of the excitement is that it is possible to create a vibration damper that performs well in the short term only. With Second Skin, you know it is a product that has been in use for years, under every imaginable condition and has stood the test of time. It may be tempting to believe that this is going to be true for every product and the only difference is the markup each vendor applies to their product. I promise you this isn't true. Manufacturing a reliable product costs a lot more. The point of this tirade is that "they are the same" is being actively promoted by AT and repeated by people who aren't willing or interested enough to look at the proposition fairly. Go to the Web site. The Meta title is: "Sound Deadener Better Than Dynamat". This is demonstrably false by every relevant metric. Look at the company forums and ask yourself if Second Skin would allow the kind of statements that AT allows about Second Skin to be made on a Second Skin forum about AT. I'd be shocked. A poster on one of the AT forums stated that AT was better than SDS CLD Tiles by a long shot. Did the owner come back with something like: "They're both good products intended to be used differently" or anything like that? Of course not. His response was: "I'm going to make this a sticky!". I obviously prefer my product, but I wouldn't hesitate to use products from Second Skin, Dynamic Control or Cascade. All very good products. All sold by companies that are secure enough in the quality of what they are selling and familiar enough with how they should be used to conduct themselves in a professional and respectful manner.