Stock style sound deadener

Any members out there have experience with the stock style sound deadener? Year One offers it as well as Summit and would like to hear real world opinions on it. I'm nearly ready to lay down carpet & would like a little sound/thermal insulation in the Swinger. I Don't have a need for full Butyl Rubber like Raamat or Fatmat & a friend has the factory replacement he's decided not to use. Please share any pros/cons. Thx much & here's some links to show what I'm referencing.

Summit Racing:
http://www.summitracing.com/parts/auc-8444/overview/make/dodge/model/dart

Year One:
https://www.yearone.com/Product/1966-74-A-B-E-Body/uw66