I've got rollers too, although I built mine. They work great, especially with a damped chassis. I use Dynamat, but there are other choices. Walker SST kicks tail. I like the Audience Auric Illuminator quite a bit. The burned, black CD's are the best of all but it's a bear to set up and more costly than the others.
You'll get a bunch of static from guys who'll ask you to prove to them that they work in your system. Don't sweat 'em, they give it to everyone claiming to hear noises.
Happy tweaking!