I'm using firefox since 2015. And I find this browser better than IE. It was working fine in the past but now they have added many things that's why its speed has came down. I request to the developers to make it more fast. Because its a good browser but going down due to its slow speed.
This is the best browser, I recently switched my browser to Mozilla Firefox. The latest version of this browser is very light and very handy. Thank you Mozilla Firefox.