i have heard a lot of good things about raammat...i myself used bquiet extreme on my car. i bought the i think 75 sq ft or something i don't remember. i matted from under my back seat to the end of the hatch with two layers throughout the whole thing. it came out really good. stinky for the first week tho. damn tar. i also did a layer on my doors and then added a layer of dynamat xtreme that i had laying around over that. Then i used dynaliner which is a acoustical foam material that blocks road noise with open cell structure or something like that...i have gotten a lot of comments on how quiet my car is now. the only noise i get in from the firewall