Product review (5 stars): Good quality.  Can replace RPWFE, too if you get creative.
As good at the OEM... or very very close.  Make sure you run it for a bit to get best taste and wash out the dust from the internal stone.  I use it with my RPWFE fridge.  If you got a GE fridge that counts down the days for replacement, the "plug" that was in place before you put the first cartridge in has a RFID tag on it - hope you saved that.  You can simply use the RFID tag from the dummy and tape it to these.  Your fridge will say "not filtering" when you use the water, but it works and saves $30 per cartridge.  Shame on you GE.