I might not as I already have a VPN service which I use for all devices and all kinds of Web based activity, not just One browser.
I am very interested in Mozilla and how they are shaping the Web.
I want to switch to Firefox but, somehow, after some time their update makes the Browser more heavy on Machine.
I like to keep my tabs open for a very very long time. And with Firefox I am always not feeling comfortable.
For VPN, Opera already provides it for free.