Product review (2 stars): but I'll purchase future filters directly from Whirlpool to ensure I am getting the better performing filter
I previously used Whirlpool filter model 4396510.  I was hesitant to try these new filters based on the many negative reviews.  However, I decided to give it a chance.  Upon inspection of the EveryDrop filter, I noticed that the tip end design had changed, as noted by many other reviewers.  The two filter designs have the same tip.  However, the EveryDrop filter has a longer filter body which requires notches to be included in the body design near the tip to permit proper interfacing with the internals of the refrigerator.  This discussion is covered by other reviews, so I won't add to it here.  Another issue came to light as I read the packaging of the EveryDrop filter.  The package for the EveryDrop Filter 5 listed filter models EDR5RXD1 and EDR5RXD1B.  It also stated a the filters met particulate Class II (1-5 micron).  The EveryDrop website, and every other publication I found on a quick internet search, specifies particulate Class I (0.5-1 micron) for these filters.  I called Whirlpool customer service to find out why there was a difference in the listed particulate class.  The representative grabbed a filter off the shelf and read particulate Class I on the package.  Additional discussion uncovered that EDR5RXD1B is a Canadian model number and is not included in the description of the US packaging.  Also, the representative stated that the US filters are made in Mexico, but my filter listed Taiwan as the manufacturing location.  I have to conclude that Amazon sent to me Canadian filters that are different from US filters.  I will be paying a little extra money, but I'll purchase future filters directly from Whirlpool to ensure I am getting the better performing filter.  To anyone who decides to take a chance on these filters, be aware of the different performance levels that are available and make sure your are getting the filtration level you are expecting.

As I have come to expect from Amazon, they permited free return of the filters and full refund of the purchase price.  Amazon's customer service continues to outperform most other companies.