Review (5/5): YES!  Much better than the standard product.
YES! I wore out a previous Sonicare brush handle. Got a new one. The brush seemed stiff. I have always been told by my dentist and his hygienists to use soft bristle brushes, both for manual and power brushing. I ordered several replacements from Amazon and took them to my dental hygienist. She and I agreed these are softer, and the best of the bunch.