I can only offer one perspective, a personal experience, and it is totally laudatory for using Gargraves track and Ross switches, which I used throughout this entire layout project, ten years ago, for a family in southern Jersey, evidenced here in a few shots. I have not heard one negative peep from them, and the layout was built for their teenaged son who runs the trains every day after school.
They have had my standing-commitment to replace anything that wears out or deteriorates, free-of-charge. They have made no requests, to date.
FrankM, Moon Township, Layout Refinements, and Louisville.