Product review (5 stars): Effective Water Filter
Most water filters leave a noticeable taste, but the Waterdrop filter has none.  I'm concerned, though, because I have a "water hammer" problem after a new filter is used for a few days.  I've tried installing an in-line arrestor, but that didn't seems to resolve the problem.  The arrestor with a 1/4" fitting is pretty small, so perhaps I need to buy a larger arrestor and use a series of reducers to go from 3/4" to 1/4".