Product review (4 stars): These are better build quality than the OEM, but have their quality issues as well.
These seem like better quality than the OEM models, but they have had their issues with quality as well.  If you use the OEM models, you'll notice some are poorly hot glued in, and they are just sitting there in their frames because of gravity - well this has happened too, only these don't appear to be hot glued in as the OEM models are.  Actually I'm not sure how these are secured in there, but most of them do stay in the frames.  Anyway, the wicking seems to be effective, and seems to gather more minerals at the top of the filter than the OEM model, which means less gunk in the tank over time - I do use the humidifier anti-bacteriral agent as well.