Review on 16PCS KHBD Replacement Toothbrush Heads - Compatible with Oral B Braun Electric Toothbrush Handles: Oral b Pro 1000 7000 1500, Smart Genius 8000 Vitality by Frances Johnson

They're definitely a lot cheaper than the Oral-B original so don't expect the same sharp quality. Even new in the box you can see the bristles have spread out a bit more than the original bristles which are very sharp and straight. However, I think they are good enough considering you will be replacing them every 3 months. So far they have lasted 3 months for me, they are good, so combined with the discount from the original, full 5 stars. It's also an inexpensive way to test the different functionality of these different heads before bulk buying originals with the same head type.