I have the 720PRS comps, and they sound beautiful. The midbass is insane, although each midbass alone weighs 4.5 lbs. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif, and my doors are fully deadened/sealed with Damplifier Pro.
I was powering them with a JL 300/2, and they sounded GREAT. Now I'm powering them with the front channels of a NINe.5 and they sound AMAZING.
Some regard the highs as being harsh, but I disagree. They are very smooth, and if they are harsh to your ears, you can always EQ them.
Best $250 I've ever spent on car audio, bar-none.
I highly recommend them. A Sundown SAX-100.2 or Elemental Designs NINe.2 would work wonders for them.
Hope that helped.