Good timing! I was just doing a little research on the subject today. I have a roll of standard dynamat that I purchased a while ago. Most of the reviews and comments I read agree that dynamat is a great product but over-priced. Readers mention other products such as second skin (seconskinaudio.com) and fatmat (fatmat.com, i think). Fatmat deals on ebay and direct on the net, second skin has dealers and if unavailable they deal direct. Both products appear similar to dynamats' products. Reviews seam to suggest the same. Price for both products is about 1/3 of dynamat. Fatmat plus was about $70 with shipping for a product similar to dynamat extreme. Hope that helps.