Forget buying those off-brand, cheaper water filters for your fridge. Sure they are way cheaper, look the same, and perhaps even state they are much better...Bottom line...They're not!
Exactly what it is that makes the off-brand filters problematic, and these LG filters not, I honestly don't know. What I do know is I've been replacing my water filter for the past 5-years, using just the LG LT-700P, and have had zero issues...Zero! That unfortunately can't be said for the reviews for some of the off brands complaining about filters leaking, producing a fowl taste or smell.
For me, these LG filters are worth the $50.00.
I'm extremely happy with these, and will continue purchasing them as needed.