At this point.. none of them are.
That is the right answer.
Cross Referencing Data is the reason why all anon solutions fails.
Your IP address is not anon,
Your Browser info is not anon,
Your Email Address is not anon,
Your Bank Account which you linked is not anon,
Your address where you mailed or received goods is not anon,
there are no guarantees the person that did business with you did not sell your identifiable information.
All anon solutions will fail til they can solve all of the above.
1. i2p
All so-called anon networks , are taped from the inside , they will not protect your IP.
2. secure browser
, There are no Secure Browsers?, even if it blocked the OS version and which Browser, that information will be recorded. This flags you immediately as someone hiding their info, which means your internet activity will be flagged and you watched even closer. 3. i2p email address
Same Answer as 1.
4. use cash and use the i2p exchange or btc-e
Even Cash is tracked by serial #s and those little chips.
Had a friend in the 1980s, that went on a plane trip , and was pulled aside and questions why he had over $5000 of Cash with him.
My friend had a logical reason and so they released him. But what always bothered him was they did not ask to see the cash, they knew the exact amount he was carrying without ever seeing it. And that was in the 80s.
5. a real pickle, i don't think any coin can solve this
Real Problem is you can't make a transaction or communication with someone or a website , that does not leave some residue of information, that can't be cross referenced by Big Brother to pinpoint you. The day of personal privacy died over 30 years ago.