This is one of my specialities....
Best for the money is
www.raamaudio.com RaamMat The stuff is a bit heavy (like Dynamat Extreme) but it is sticky, and it works great.
The best overall IMO is Second Skin, but it costs quite a bit.
The lightest is Cascade, and although I haven't used it, it is reported to be quite good.
It is universally known that Dynamat Xtreme is great stuff, but it has absolutely no chance against other brands when you factor in price. It is WAY overpriced.
If money is more important then a little extra weight, then go with Raammat. Get a single roll, which will do most of the car, no problem. Get a second roll if you are going hardcore by matting the entire car. To cover the mat, you want to get about 4-6 yards of Ensolite, a closed-cell foam that nicely quiets any remaining squeaks, rattles, or noise. Ensolite with the quality spray Rick at Raamaudio sells is a good combination with the mat.
You can refer to my install page as shown on my signature, if you need guidance with installing.
