I'm on my fifth, or so, EveryDrop filter, and this last one I installed resulted in a plastic-like taste, that was very prominent.  I followed the same flushing procedures after installing the most recent, as I have for all of the previous filters.  I've never experienced "flavoring" like this with the other ones.  From reading other reviews, it appears that this may not be an isolated incident.  As mentioned before, all of the previous filters were fine, hence the "Average" rating.