Product review (5 stars): First time trying non-name brand
So, I have always purchased SAMSUNG DA29-00020B filters for the refrigerator, and this is my first foray into using an off-brand.  I ordered it, and will update this review as time progresses.  It may take a while, as the filter probably won't need to be changed for about 6 weeks.

Update (19 Feb 2017): Just installed this a few days ago.  No problem installing it at all. The instructions say to run 3-5 gallons through the filter. This is a bit difficult, since we can do about a quart at a time. We did run 12 quarts (3 gal) through. I'm not sure of the purpose of this; the instructions seem to indicate that it is to ensure that there are no air bubbles left -- they seemed to go away after about 6 quarts.

As to taste, I'd deduct about 0.3 star; somehow, the SAMSUNG filter made our water taste absolutely WONDERFUL for a few weeks after the new filter is installed. It was something I always looked forward to. This didn't happen with the Ecoblue, but the water does seem clean, and comparable to the SAMSUNG after the "wow" taste wears off. I'm willing to give this up for the savings.

The other thing I'd deduct 0.4-0.5 star for is the noise. This filter is NOTICEABLY louder in the refrigerator. This is something we can get used to, as long as the filter holds up for the six months it is supposed to.

Update (25 Feb 2017): This company gets a gold star for customer support -- they sent me an email in December asking about my purchase (but I hadn't installed it yet). I finally replied to them with the same information in the review above. They responded that it shouldn't be loud; that the carbon core may have become loose.  The new filter arrived promptly on the 23rd; I installed it, and the new one is quiet, like the Samsung.  Excellent work on their part - I'm moving the review to 5 stars!

Update (Oct 2017): One drawback of (at least) that we accidentally discovered is that the filter change light doesn't function with this brand. We realized that we had gone past the replace date by many weeks, so we swapped it out for our last Samsung filter.

Update (Apr 2018): The filter change lights ARE working with the Samsung brand, so it was clearly that filter.