I am disappointed with the Hx700L/30 E-series toothbrush replacement heads from Amazon delivered to me on November 26, 2011. I don't find the bristles as soft as the other E-series replacement heads purchased by me. As a matter of fact the new bristles are so hard that my dentist informed me that I was brushing my gums away:( The problem is that since the brush heads should be replaced every 3 months I ordered this item as a repeat order. I don't know why these brush heads are so different and what to expect from the next order. If the future brush heads bristles are of the same quality, please cancel my order.Thank you.