Rope caulk or Dynamat on Subwoofer Basket?

DIY people used to to a lot of rope caulk on the back of woofer basket of stamped steel to damp ringing, does rope caulk or dynamat make any difference on casted steel basket?
Anything to dampen the vibrations will work.
Dynamat is expensive.
Rope caulk is cheap.
If spending money makes you feel better, get the Dynamat.
If you just want something that does the job, get the rope caulk.