Product review (5 stars): Expensive, but it's the genuine article.
The headline says it all. It's the genuine article with more and higher filtering properties than the cheaper models, but at these prices, it dang well better be, right?  They last less than 6 months on my particular water supply, but I have bad water so your experience will likely be different. As with any water filter replacement, be sure to bleed out all the air after installation. It usually takes a couple gallons before the spurting subsides. To check for post-install leaks, I leave a cup under the dispenser and a dry paper towel under the fridge, directly below the filter, for at least a day after each replacement. Never had a leak yet, but with hardwood floors, I'd rather be over-cautious, than surprised. There is no odd taste when the filter is first installed either.

 Overall, an easy 5 stars, despite the unholy price tag.