Question about acoustic panels

I'm looking to add some room treatment to tame what I would describe as muddy bass in a small room (12'x14').  I'm looking on the ATS site and they have acoustic panels in which they offer in the thickness of 4" at a price starting at $42.45.  The description states "the added thickness increases absorption at low frequencies.

They also have 4" thick bass traps that start at $60.95.

For the savings of 18.5 per panel, could I get away with using the regular acoustic panels, or would I be better off spending the extra money and going for the bass traps.

Thank you.