I'm currently using Firefox v55.0.3 simply because the one extension that I have grown to love over the years (TMP - Tab Mix Plus) is not compatible with the Quantum version. Up until this point, I've maintained hard stance against upgrading.
Lately I've been wondering how much am I opening myself up to malware attacks by clinging on to such an outdated version. I am using Win7 Pro x64 which I keep fully up-to-date, plus WinPatrol, plus ESET Smart Security, plus a modified HOSTS file. And finally, I use a VPN service for an added layer of security. Lately I've been thinking about upgrading to the latest version of Firefox... but damn, it's hard to let go of TMP. In the past, I've looked at some alternatives to TMP but no other extension comes close. Thoughts?