Product review (4 stars): Decent (Actually Pretty Good) Generic Filter Replacement
This is the second Water Sentinel WSS-1 filter I bought from Amazon. These filters are $10 - $15 cheaper than the OEM filters. We've used the OEM filters a few times, but saving $15 and getting a filter of similar quality is more important than name brand replacements. Below are a few features I think are important.

Ease of Installation
Not too bad. These filters are a little bit larger than the OEMs, so I needed to remove the upper shelf to install. After filter installation the shelf can be replaced at its original position. It's very simple to install. Open the package, remove the red cap, lube the o-rings with included lube, remove the old filter, and twist in the new filter. Takes a few minutes at most. A little bit of water will drip after removing the old filter, nothing to worry about though.

First Time Use
After install, you should run a few gallons of water through the filter to clear out the carbon dust and air pockets. The manual says 5 mins of water, Samsung says ~3 gallons. I did ~7 quarts of flushing this time. The first 2 quarts will be quite black from the carbon dust. Definitely flush with another 2 quarts to remove any further dust. Filter another 2 quarts for good measure. I think a couple gallons or 3-4 mins of flushing is sufficient.  The water will taste a bit funny for the first few gallons, but nothing that will impact your health or to be concerned about. After a few days of use the water does taste much, much better.

Taste
Subjectively, I think the taste is a little bit worse than the OEMs; the water is sort of flat. I'd say it's about 80-90% on par with the OEM filtering. The water doesn't taste horrible and you get used to the taste quite rapidly. The filtered water tastes "cleaner" than regular tap water. It does remove some of the minerals which does leave a flatter taste, but it's nothing like distilled water. The taste does improve after about 10 gallons of usage. I guess it's the residual carbon dust and other stuff from manufacturing that slowly comes out after the initial filtering.

Longevity
I bought our previous WSS-1 filter on July 10 and the check filter light on the fridge came on about 5 months later. I think the check filter light is time based rather than usage based, but I could be wrong. Anyway, these filters are rated for about 300 gallons. We use quite a bit of filtered water, so I'm not surprised we'd go through the filter quicker. A five month replacement cycle isn't bad at all.

4 out of 5 stars because of a little bit of inconvenience with installation and a taste not quite as good (but by no means bad) as an OEM. Try this filter out once, you should be pretty happy with it, especially since the price is much cheaper. I think we'll continue buying this replacement filter in the future.