Product review (4 stars): Tried off brand.. & now I'm back..
We always bought these filters because they were the ones designed for the fridge (but so expensive!). Well I went out of my way and bought an off brand filter because of the decent reviews. The cheaper filter worked for a month and then the water tasted just like it would without a filter.
So back to LG I went! Like a hungry dog to it's annoying owner.
This filter might be more expensive but it has lasted about 6 months every time I've purchased it  and the taste of the water is soo much better with the filter. only major complaint other than the price is there seem to be small white fragments of calcium build up but only when using the ice. The town I live in has very hard water, if yours isn't then I'm sure you'll have even better results.