Product review (5 stars): Now comes with a smaller o-ring in the box, which fixed the leaking
I almost bought the Brita brand filter again after reading about all the people experiencing leak problems, but I couldn't resist the savings.  I've used the original GE MWF filter in my GE fridge, then switched to the Brita brand and have replaced several of those.  I just recently found the WaterSentinal brand and it's about a third of the cost of the Brita.  I went to install it in my fridge and like many others my fridge just sprayed water everywhere.  It screwed in all the way like it was supposed to, but wouldn't stay sealed.  When I opened the box I noticed another o-ring in there with a note that stated if it leaked then use this o-ring, so I quickly swapped out the o-ring and I was in business.  I ran it for 5 minutes as they say to clear all the crud out, and I'm pleased to say that this filter works just as well as either the GE or Brita filter ever did.  The flow is also noticeably faster too.  Water and ice from this filter tastes the same, and I saved a bunch of cash! I'll be buying again for sure.