Product review (5 stars): Great for the price!
I'm not sure why other people had problems with these filters.  I followed the directions about filling it up before putting it in my fridge, and it had no air bubbles.  I will say it took a while to fill up because it takes time for the filter to absorb the water you are putting in, so I wonder if people just filled it up very quickly to the top and put it in their fridge without waiting to see if it was really full or not.  I also had no problems inserting it in my fridge.  It can be a little tricky, especially since it is in the back top corner of the fridge where it is hard for short people to reach, but not impossible.  I have noticed my ice tastes much better than it had been tasting prior to replacing my filter, so it seems that this is doing it's job.  I wish I could comment about the water taste in particular, however my water line is likely frozen up and not working :(