Now I understand this suggestion more deeply. Actually brain wallets have low randomness and should be avoided for security reasons.
Which address generation tool do you recommend? It should not a brain-wallet and should use hardware random generator of the computer.
Bitaddress.org, bip38.org or Electrum. Generating anything with only a passphrase to access it is incredibly insecure. If you really do want to use something like Brainwallet but more secure, try going to keybase.io/warp/. You are to select your own secure passphrase and add an email with your salt. I wouldn't say that its super secure but its definitely more secure than typical brainwallet since the attack has to be specific at you.