I've been using Tor with proxy disabled[1] ever since that fingerprint tester[2] was posted a while ago. I figure of all people forking and hardening a web browser, I trust the tor project the most. I'm no tracking expert, but it's the only way I've been able to score a non-unique fingerprint.

[1] https://github.com/KarlTheCool/tor-without-tor

[2] https://coveryourtracks.eff.org/