I HAVE ONLY SLEPT ON THIS MATTRESS FOR A WEEK AND COMPARED TO MY OLD MATTRESS IT IS HEAVENLY SLEEP.  SO FAR, I LOVE, LOVE, LOVE IT!  TODAY, IT IS A 5-STAR MATTRESS.  HOPEFULLY, I WON'T COME BACK A YEAR OR SO DOWN THE ROAD AND COMPLAIN THAT IT WAS A POOR PURCHASE.  TODAY IT IS WONDERFUL!