I looked at filtration faucets that were literally four times the price of this one - this is just as attractive, well built and easy to install.  A 1/4" hole was all it took.  It works smoothly, the spout pivots 360 degrees on the base, and the brushed nickel finish matches my Kohler faucet well.  My only (slight) criticism is that the aerator at the end of the spout is a slight mismatch in finish and doesn't align perfectly with the spout.  Doesn't affect the function at all and I may be the only one in the world who notices it.