I see some other "dynamat" companies and was wondering if anyone knew anything or had any experience with them. They are cheaper than dynamat and with what the seller claims, they work just as well, or even better.

thanks

 

I'm sure they work just as well as dynamat. the trick is to only place it in the area's where you hear unwanted vibrations. Using too much tends to kill the lower frequencies. Thats my experience with it anyway.
I once lined my entire trunk with dynamat, bottom, top, sides everything & it really decreased the sound quality. My advise is only put it where it's needed, don't overkill with it & everything should sound great. No more annoying rattles!!!

 

Thanks a bunch NOS.