Product review (5 stars): Solid 4 Stars for price alone! NOT RPWFE (the E is important!)
First off I got about 2.5 years from my original GE filter. I probably could have changed it a bit sooner but I used flow rate as my main indicator that it was time to swap it out. For those of you with hard water or other factors like well water you will probably need to swap out much, much sooner. Honestly even if I get 1/4 of that lifespan on the generic filter I will still be ahead.

Four stars for price alone. I was hesitant to give a fifth but performance so far has been great. I will adjust down if it craps out on me prior to promised lifespan.
Water quality has been excellent. My local water has a noticeable chlorine tinge to it and this filter removes that completely.

TIPS:
#1 Flush out the filter with at least a gallon if not 2 gallons when you first install. It will be black-ish water. Do not freak out, this is carbon, this is really no different than those annoying black flakes that never seem to go away on your BRITA filter. Bonus: if you are on an alkaline diet you can drink the carbon enhanced water for super strength or something.
#2 If your fridge requires RPWFE filters this filter will NOT work! Your fridge will throw an error saying it has detected a leak and will shut off water/ice. However, you might be able to "hack" the fridge by taking off the sticker containing the RFID chip on your GE official filter and sticking it to the side of the fridge where the generic filter would be installed. You could also just stick it onto the replacement filter in the same spot as the old one. The "E" is just GE trying to get you to buy your stuff through them. It does NOTHING for the water purifying. It only purifies your wallet of some more cash. This is just like Keurig using a stupid code on their pods, take off an official lid and tape it to the sensor.
#3 Don't be afraid to re-set your filter changeout reminder if you are still getting good flow and water flavor is unchanged. Usage and performance may vary drastically so don't yell at me if you don't get a longer than promised lifespan out of these filters