Review (4/5): Not quite perfect OEM replacement
On first impression when sticking one of these into my mouth, they have a really thick stem which is unlike any other head I've used with an Oral-B electric toothbrush. That doesn't mean it is bad and they still fit my toothbrush without any problem -- nothing is loose.
These are claimed to be "soft" but I find them a bit firmer than the Oral-B OEM or other generics I've used. I think there's also a few too many bristles in the center part of the brush -- I don't feel as much movement on my teeth and gums as I do with other heads. There is some standard marketing text on the package with some broken English and each brush has a colored ring on the bottom just like the OEM Oral-B head. Note these come in a four pack and you end up paying just over a buck for each brush.
Are they worth it? I don't know how long they will last, but so far they're fine. I think I'd look for a softer head and something that gives a bit more movement, but that's not enough to knock them down any more than one star.