I prefer Firefox. I tried Chrome when it first came out and here recently a couple weeks ago. It's great as in it gets the job done just like IE and Edge but I think it's the Geek in me that keeps me using Firefox. I like how the extensions, I use, work/laid out in Firefox versus Chrome.
I am very curious to use Edge once extension support goes full throttle. So once all the extensions I use become available for it, it'll definitely be in heavy rotation along with Firefox and other regularly used software.