Product review (5 stars): Pex line
Our plumbing code requires pex or copper, so the cheap plastic was out of the question, and we don't like using copper for our fridge due to the flexibility constraints.  We couldn't find this locally, so amazon was amazing as always in having such a wide selection.  Was very easy to work with as it is flexible, yet rigid enough to easily route the tubing and easy to cut and connect.  Have not had any issues with leaking or any plastic tastes in our water.