Product review (4 stars): Works well as an OEM replacement and much, much ...
Works well as an OEM replacement and much, much cheaper in cost.  Be aware, though, that this Waterdrop filter is about 3/16" longer in length than the OEM units -- which does not affect function, but it does stick out further from the filter receptacle.  When I was installing the Waterdrop filter, I kept thinking that I didn't have it fully inserted because of this, and it took a while to realize it's just a longer length and sticks out further.