So far I love it! The difference in noticeable already. The panels don't "ting" now when I tap them with metal, they "thunk" and the echo in the vehicle is reduced considerably. I did the metal under the headliner and put my hand on the metal on top and it hurt, the other side of the metal was cool to the touch. The true test will be driving it around and letting the powertrain get nice and hot. I'll consider it a success if I can put my bare feet on the floor without pain! I have used Dynamat on all my projects up to now. I will probably still use it for doors and upper firewalls where spraying is more difficult. However, Lizard Skin is way cheaper than Dynamat. All in with both sound and thermal + the application kit was under $300. Doing the same amount of coverage with mats would have been a lot more. I think full matting on my last Mustang was over $1000.