Product review (5 stars): Different results on different model of fridges
I read the seemingly equal bad and good reviews and almost shied away from this, but figured at half the cost of the OEM part it would be worth it to try it once.  I'm glad I did!  It has worked perfectly for the last week or so that we've had it installed.  Popped right in just like the OEM filter and my water pressure is great (maybe even a little better than my last filter).  I followed the instructions and ran about 3 gallons of water through it and can't notice any change in taste from the OEM filters.  My fridge model: RF4287HARS

UPDATE 1/29/15: We moved about 7 months ago and bought another Samsung refrigerator (RF263BEAESR).  Both models use the same Samsung filter, so when it was time to replace the Samsung filter that came with the fridge, I didn't hesitate to order the WSS-2.  But when I put it in the fridge the water flow was incredibly slow (it would take maybe 90 seconds to fill a 14oz glass).  I popped the filter out and the water flow was great.  Popped the filter back in and it was agonizing slow again.  So, I assumed that I received a defective filter and initiated a return with Amazon. I ordered another WSS-2 and it behaved the exact same way (super low water flow).  I took the filters out a handful of times and double checked the compatibility numerous times.  So, I was about to call Samsung for warranty service on the fridge, but I figured the first question they would ask would be whether or not I was using an OEM filter.  So, I ordered a Samsung filter (Da29-00020b) and put it in.  BOOM - great water flow.  So, while the WSS-2 seemed to be okay for my original fridge, it did not work with the RF263BEAESR.