Product review (4 stars): Great filter - but LG has you right where they want you....
This is an OEM LG water filter cartridge. Excellent quality and performance you would expect from the LG brand. My only issue for 4 stars is I cannot feel just a little taken advantage of having to spend $70+ a year on filters(1 new filter every 6 months per LG), after purchasing an expensive LG refridgerator.
To be fair there are other after market filters that are less $$ but I have yet to see any that meet both ANSI Standard 42 and Standard 53. To simplify Standard 42 is more about taste, many aftermarket filters meet this. Standard 53 is much tougher and more about the water being safe. Standard 53 regulates the removal of contaminants - heavy metals, wastes, bacteria, pesticides, herbicides, chemicals, and other nasties.
Soooooo  - I will stay with the LG filter, I just wish they were a bit more reasonable on the price....