Cloud Rendering of Fusion 360 is perfect, especially if you have a weak and nearly obselete computer like mine. Many of my friends still try to use Keyshot in their laptops with integrated graphic cards. And every time they present their project, i always have the best renderings while their renderings are grainy.
If you have a strong computer then you can use Vray, Keyshot, Lumion, Octane etc. But still even if i would have a strong computer, i'm not sure if i would use them. Because Fusion's Cloud Rendering is damn fast, and high quality is consistent.
I would only use these other programs if i really need a exceptionally detailed render. And to be realistic, when would i need that ? In my job, you will need fast and high quality renders, that's all, for customer mostly.
I think that people underestimate the rendering power of Fusion 360's Cloud Rendering.