Product review (5 stars): Good Tasting Water at Reasonable Price
I've been buying Samsung filters until they jack up the price from $20 to $49... so decided to try this.  The water tasted great, just like the Samsung filter.  It's been a week, no leaks so far.

There is a small clear plastic cap on the filter connector that should be removed.  When I removed it, it took the black O-ring with it.  I had to reinstall the black O-ring.  If you don't, it could leak.  I compared the connectors and the O-rings on the Samsung filter and the Waterdrop filter.  They looked identical.

So I just bought 4 more filters yesterday.