Sound deadening - Resomat

[Invid]

Has anyone used this product? Opinions compared to traditional underlays?

http://www.tru-fitcarpets.com.au/

Thanks

[progkamol]

A mate of mine used a similar product on his ute (not sure if its that brand) ... I can't really notice difference in noice level because his muffler is loud ... but was pain in the arse to install them as you can't just tuck them under the dash ... so yes the dash have to come off but I think its depends on the car model as well