Product review (5 stars): Supco Replacement Filters for GE MWF - Great Fit
I ordered the 2-pack of the Supco WF287 Refrigerator Water Filters&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Supco-WF287-Refrigerator-Water-Filter-Cartridge-2-Pack/dp/B00E37TQR4/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Supco WF287 Refrigerator Water Filter Cartridge, 2-Pack</a>.  After the first order was not received (it was claimed to have been delivered to my home by UPS), Amazon quickly gave me a refund and ordered the replacement (since the price had decreased since my original order). I received the order within 4 days. I just installed the filter in my GE Profile refrigerator. Intallation was very easy, just follow the instructions on the Supco box:
1. Twist off the old filter one half turn counterclockwise (note that this is looking from the bottom of the filter)
2. Gently pull the filter straight down and discard (the water will shut off automatically)
3. Fill the new filter with water (fill with water from your faucet)
4. Push the new filter  up into the filter receiver in the refrigerator until it stops (you don't have to push hard,  just a little pressure)
5. Twist the new filter one half turn clockwise
6. If your refrigerator has a "change filter" light then you need to reset your "change filter" light. Presss and hold the "reset water filter" button for 3 seconds.
7. Flush filter with 1 to 2 gallons of water to remove air, flow will sputter until air is removed

A couple of notes:
a. The filter is in a sealed plastic bag inside the box, and has a plastic adhesive cover over the top of the filter.  When you remove the adhesive cover there should be a small black O-ring either inside the top of the filter or stuck to the adhesive cover. Place the O-ring inside the top of the filter - there is a small channel which accepts the O-ring around the inside of the top of the filter.
b. When filling the new filter with water, continue filling until no more water will drain down into the filter, just keep adding a little water at a time - if you do this the filtered water will not sputter when flushing with the 1 to 2 gallons

This is the first time I have replaced the filter on this refrigerator, and I will come back and update my review when I change this filter to let you know how long it lasted, and if I have any problems with it.

Update 7/14/15: I've used two of these Supco filters, and they performed flawlessly, just as good as the more expensive GE filters.