Sorry, I was a bit quick with my post; I would NEVER spend the money on Dynamat. I've known about the Home Despot stuff for quite some time. What I'm more interested in is how well the Corolla quiets down.

It's something you get used to (the noise of the Corolla) and barely notice it after a while. That is, until you ride in your little brother's new VW Jetta.

SILENT.