+1 for the foam sections.
ae101s come with them factory, tucked down behind the rear passengers interior arm plastic bits, tucked in a cavity there, follow the top of the rear wheel well.
bought a bunch of other stuff from pickapart and they didnt even charge to take a few with me? - guess they are not worth much as scrap.
as I had damaged the plastic bit and had it out - they made a significant difference - I've just left them in there as they weigh bugger all and are worth nothing.
point being you can do it youself, and cheaply - whereas the dynamats more expensive and requires other people to do it = $$ in labour.
but I havent used it so it might be worth the money? ... up to you...