Kristov Atlas did a thorough review of DarkSend at the end of 2014.  He found some minor issues on attack vectors and they were corrected.  DarkSend has matured even better since then, and it doesn't take that long to mix.  Well, at least not for the amounts I have available to me.  It does depend on how many rounds and surprisingly the smaller denominations seem to take the longest.

You have to keep in mind that "Confidential Transactions" in Bitcoin doesn't even exist yet.  With Bitcoin's record, it may take years to include this technology into the core protocol-if ever.  There is great pressure on Bitcoin to stay completely open.  By then Privacy Protect will be complete.

So anyway, I've been sick in bed and bored, so I engaged with you my dear Icy, but now I'm tired again.  I'm going back to ignore because I know your ultimate goal is to get me upset, LOL.  So good nite to you, and keep up the good work for the government or bankers you work for.  They will still lose this one, the cat is out of the bag   Good Night my dear!