Firefox is my first choice on Windows and Linux platforms, Safari on OS=X and iOS. I use Chrome on Windows and OS-X when I want to ChromeCast, and for access to a few Google applications where I am using Chrome-specific plug-ins or extensions.
Everytime I open a browser on my Windows 10 machine, Microsoft reminds me I should be using Edge.
Firefox is my first choice from 20+ years experience using browser of common heritage with Mozilla. Inertia keeps me there. But also, this is their only business. I don't want to get hooked on Chrome because Google has a history of discontinuing or replacing products and services (mostly acquired from outside developers) after a short market life.
Chrome is fairly lightweight, with respect to computer resources used, and is not a bad choice if it is supported on all the different platforms you use.