ACHES AND PAINS ARE BEGINNING TO DISAPPEAR ....AFTER SLEEPING ON THIS GREAT TWO PIECE MATTRESS TOPPER....FOR ALMOST A WEEK.......I AM REALLY SO HAPPY.......I AM USING THE EGG CRATE SIDE,,SOFTER,  NOW, BUT PLAN TO USE THE OTHER SIDE ...FIRMER.. IN A FEW WEEKS.....I LOOKED, COMPARED, WAS CONFUSED...AND FINALLY ORDERED THIS ONE....SO FAR I AM EXTREMELY PLEASED....AND I AM SLEEPING MUCH BETTER EACH NIGHT......SO FAR I AM GIVING THIS MATTRESS TOPPER FIVE STARS AND A FEW MORE TOO.