I switched to FireFox about a year ago. Containers is a killer feature.

But the container UX is still not perfect. Only recently did they fix it so you can log into a site via Facebook or Google.

But my biggest issue is power management. On my Mac, when I run Firefox, the fans spin at around 3K at all times and the load is moderate at all times.

When I turn off Firefox and switch to Chrome or Safari, the fans spin at 2K.

Firefox is just a huge resource drain when it runs on Mac. Which is too bad because it's my favorite browser feature-wise.