Product review (4 stars): Would have gotten a 5 because I've used and loved the product for years
Would have gotten a 5 because I've used and loved the product for years.  However, I got one leaky filter and had to use the other.  This created a situation whereby I had to request a return and wait for a replacement to come so that I could send two back (the defective one and a new one).  The return process in a double-pack was a little more cumbersome.  But, other than that love the product and out of probably 20 of these I've only had one that leaked.