sound deadening review and stickied?

YzGyz

I been researching sound deadening material and can to the conclusion to Second Skin on my Nismo's cabin floor and trunk.

Anyhoo, sound deadening your car and the type and material used belongs in this Audio/Vid section. A good sound system is only as good and the environment that it is used in. You can't have good music in the middle of a busy shopping mall. You need to isolate as much "noise" from the sound/music that you want to listen to.

So to those that have used these type of materials, please post up a quick review of the following to help people learn/decide what is what and how good it is.

1.what you use
2.where you used it (include car type, door, trunk, cabin, ect.)
3.how was the application (easy to roll, flexible, heavy, sticks well, ect.)
4.how much you used (x amount for trunk, x amount for door, ect.)
5.how effective it was at isolating external noise
6.how long it take to do the job
7.would you do it again
8.how much did it cost (give estimated date of purchase to try)
9.any additional comments about your install or about the material