That's another problem. How well is Epiphany patched against various potential security issues and anonymity leaks? The vanilla TorBrowser should be the most secure for the same reasons listed above, and Tails uses it instead of rolling its own torified web browser, plus it comes out often enough to always have the latest or next to latest TBB. A stack of 50 DVDs is like $30. So if your freedom isn't worth 60 cents every month...