Product review (3 stars): Discolored and coming apart slightly after 2 uses
We all buy these for the same reason, the "extended life" claim and the cheaper price tag.  This was my first time switching out the filter in my humidifier, and these looked more appealing to me price wise and because they're advertised to last longer.  They win in price, but I'm not so sure about the "extended life".  After only two days of use, it's already become quite discolored, and it's starting to come apart a bit.  There are other reviews that are wonderful, so maybe I just got a bad one, as that happens sometimes.  The good thing is that there are two filters in the pack, so perhaps the second one will be better.  For now, though, I'm not super impressed.