Product review (5 stars): Superb
There's nothing exceptionally exciting about a water filter,  it needs to work, not leak, and not be outrageously expensive.  The OEM water filters work well, but they are very expensive. My girlfriend fills up four Nalgene water bottles a day, and we go through a lot of filters.  As the filters wear out the water gets sluggish, and we would leave our cup as it was filling up, because it took so long.  Often, we'd forget that they were filling up, and then end up dumping water all over the floor. Once you replace them, they run like a champ. Actually some reviewers of the OEM ones claimed the new ones actually slow down their water. Here in Florida, our water has a flavor, and I don't think that's a good thing. This filter flows like a champ, removes any "flavors", doesn't leak, and is dirt cheap.
Hint: This one didn't come with instructions. Fill the new filter with water before installing. It'll actually take a lot of water to fill it. Then install it, and run about a gallon of water out before drinking any:-)

I received this item at discounted price because I'm awesome. Also, I review items so the companies like that too. Please know I am honest in them and truly hope they help. If they do then click the "yes" button after "Was this review helpful?" Thanks!