Until recently I followed the bible and was routing bitcoins: Coinbase > Electrum (Mac) > Electrum (Tails) > DNM.
I don't like the idea of tumbling because then Coinbase > Electrum (Mac) > Tumbler is traceable and linked to me. If the Tumbler was colluding with LE then it is clear my identity is sending btc into a tumbler which I consider worse than having an anonymous blockchain wallet linked to me for plausible deniability.
However, I noticed that blockchain wallet does not need email authentication (i.e. I can user a burner email) nor any verification.
So my new route has been: Coinbase > Bittrex (exchange, ID linked) > Blockchain (Tor, burner email) > Electrum (Tails) > DNM.
Share this with community and looking for feedback and support on this as a good way to route coins.
plenty of people do this with https://coinb.in/ and it does the same thing.