Keep in mind the Yamaha factory warranty should still have a little left on it (5 years from original date of purchase and transfers to consequent owners) and, as far as I know, there haven't been any warranty controversy on the cams. Everyone who had issues had them resolved. Some were delayed (pandemic/supply chain?) but no claim rejections. I guess you could also buy a service policy/extended warranty but who wants to spend the extra $$$$.
Good luck and happy shopping. Usually fun but I guess it can also get stressful making the "right" choice.