Product review (5 stars): Cost effective replacement for Samsung fridge water filter
Updated Feb 2012:
When I bought this is Sept 2011 this was around half the cost of the Samsung branded filter available locally. The price difference is smaller now by comparing on Amazon, with this being about 20% cheaper than Samsung's own version, the DA29-00003G Aqua-Pure Plus.
It fits with no problems and does the job pretty well. I originally gave it 4 stars since it leaked a little, but in the end I feel comfortable re-rating it to 5 stars after using it for an entire cycle  since this was considerably less of a problem than the original Samsung DA29-00003G where I had to mop up the refrigerator weekly!
The filter lasted 5 months in my 5-person household before the door light went pink. It's a no-brainer getting this over the OEM. I will order another one from this source.