I had coaching with delcrossb in May and can definitely recommend him. (Didn't post till now cos some serious real life stuff got in the way of pokerz).
Del is a very active DCer and poster in the PLO forum and definitely knows his stuff.
He is not the kind of coach to say "do this, don't do that etc etc" - he asks about the thinking behind your plays and then follows up any points brought up. In short he helps get you thinking critically and analytically about your play ( and your opponents too).
He is also open for emails/questions etc that follow on from the material covered in sessions.
In fact I logged off skype at the end of a session to get some food and when I came back I found that he had still been thinking about a hand after our hour was up and had sent a long message with more analysis on one of the (many) situations we had covered.
I would absolutely recommend him as a good coach who knows his stuff.