My new (old) car is a 95 Corolla. When driving it, I notice significantly more road noise than the Altima it replaced. I was thinking about putting down Dynamat on the floor to help dampen the ambient noise.

Having no experience with the stuff, I was wondering if any of you guys could help me with some questions:

1. Does it work?
2. Does it work well enough to justify the price?
3. Is there a cheaper alternative with comparable results?

Thanks.