Product review (5 stars): Get one and save yourself a headache
I should have bought this years ago as it would have saved me a flooded kitchen when the cheap copper line feeding my refrigerator broke.  (metal fatigue from yearly cleanings)  Mind you I was always careful to try to keep the copper line looped just right behind the refrigerator, but you can only do so much.  This line is nice and flexible and has very little memory. (does not try to coil back up when released)  The fittings all fit well and hold water perfectly without the guess work of compression nonsense.