Product review (2 stars): Uh... are these even filtering anything?!?!
Original review - 4 stars - 3/2014
I got so tired of being extorted by GE, so I was thrilled to find these knockoffs.
First impression, these were far better packaged than the OEM GEs - these similarly came in boxes, but were also shrink-wrapped with plastic, which was reassuring b/c I've twice (!) ordered the GE filters from Amazon (likely actually from some Prime-affiliated vendor, but still) and one came without the foil seal and other one came positively slathered with some odd waxiness beneath the seal. Weird, and I've never had that problem when buying them at Home Depot or elsewhere. But so far, so good for the knockoffs
Then, on installation, I ran into the only problem I have so far experienced - a fair bit of squirting water when screwing this into the socket. I don't recall having this problem with the GEs, but once it was fully screwed in, no problem, and no leakage since.
The water is fine, with no difference at all noticed between the two brands.
And the cost is far more reasonable. Listen, I understand (if don't appreciate) the extortionary prices of razor blades and printer cartridges, given the fairly cheap up front price of the razor handles and inkjet printers... but GE (and other refrigerator companies), really, don't pull this kind of nonsense on us after we've dropped several thousand dollars on a fridge. So glad there is now an option that, while still likely provides this manufacturer a sizable profit margin, is far less obscenely priced than the GE filters.

Update 1/2015 (9 months later)
I got tired of replacing the expensive GE-branded filters every two months or so. And you always knew it was time to replace because the water flow gradually slowed over that period to a trickle. Because, as seem reasonable, the porosity in the carbon is reduced as the filter does its job.
Well, be careful what you wish for, as 9 months later, without replacement, the first of these filters continues to be flowing at exactly the rate as when it was installed. Nice, if you get tired of continually replacing expensive filters. But more importantly, not nice if you actually want a filter to do its job of, you know, filtering.
So, at the very least, these are (sadly) definitely not direct replacements for the GE OEMs. And I now really don't believe they are doing much of any filtering at all. Can no longer recommend.