Product review (5 stars): I really like these filters
I typically don't like to use after-market or third-party suppliers for parts.  In the past I've always used the factory MWF filter on my GE Profile refrigerator.  However, I didn't like paying $45 at home depot for one of these filters.  So I decided to give these Aquafresh Replacement filters a try.  For less than half the price per filter I figured it was worth a shot.  Physically they are similar in size to the MWF, but they have a slightly different shape.  I've only used one so far, but it installed easily and fit nicely on the filter hub.  The water pressure through the filter (at the spout) was great and all else seems normal.  One thing I noticed was that there was a small, clear washer that was loose in the filter package.  This washer needed to be placed into the opening on top of the filter so that it seals tightly against the filter hub.  Some reviews for these filters mention that they leak.  I haven't had that problem at all, not one drop.  I think the people who experienced leaks with these filters may not have inserted the washer.  I do believe that without it, the filter would probably leak.  One other feature I should mention is that these filters come with little month stickers (Jan, Feb, etc.) that you can stick on the filter after you install it.  So you can see when it was that the filter was last replaced.  I'm hoping to get six months out of one of these, but I've only had one in service for about a week.  Right now, that's the only unknown.  Will these filters have the lifespan that they should?  I'll try to do an update in the future.