It is well worth it. From a small system all the way up to the whole trunk filled with subs. I have 2 15"s and it works great. Of course its not going to take care of all the rattle with that much power but it sure does help. I would recommend getting the tools with it or use something similar that you may have laying around the house. It gets tricky if you dont when you get into corners and awkward spots. It was a little small for my trunk in a 2007 mustang so another pack would have been helpful but I most def recommend it.