Product review (4 stars): Read the directions to avoid any leaking, it's fine folks!
Ok so admittedly I was like most others were/will be.  I removed the old filter and screwed this one in.  Water all over the place, leaking, and was mad and getting ready to return.  After I came back and read more reviews about "filling the filter with water first" I looked on the box and yes, the instructions are there to do that lol.  So I did this, filling it slowly and tapping until no more bubbles were rising to the top.  Repeated the process of insertion, and it did not leak at all except a slight amount of initial spillage but this time I had a towel under it.  I'm guessing the air in the cartage was causing the spray back.  Ran 3 gallons through and watered the plants with it.  4 stars instead of five, because although I can't tell between a taste test of tap and the filtered water, I live in San Diego and my tap water doesn't have any chlorine taste to begin with.  However, I can tell that the filter media in this cartridge isn't as dense because the water comes out much faster, and the LCD screen that counts cups dispensed was undercounting by about 50% (to be fair, I don't recall if it was perfectly accurate with the previous GE cartage, but seems faster flow).  If you're like me and want generally "cleaner" water and to stop the damn fridge from beeping, and don't want to use an old cartridge forever because you know they probably get all kinds of crap built up in them, I think this is a solid choice just follow the directions.  Note, I dumped all my old ice and will wait a day or two for new ice to cycle through - I'm curious if the (possibly?) faster flow would mess things up down there?  If I don't update this review, it definitely means it didn't so go ahead and buy the thing.  PS - going through my fridge menu to reset the cartridge, it had instructions on it that said the same exact thing about filling cartridge with water first, so it seems to be a standard procedure with GE brand as well and not just with this model ;)