I personally like #57, however I went over it with client and they said it was almost too modern. Maybe tone it down a bit. Also client still like #51 & #7 the best. They still would like to see the hand in #7 combined with the palm tree in #51 and also add a small 3D/Perception aspect to the logo if possible. Sorry to keep wanting more and more...but you are on the right track. Also did you take a look at the Oxford, Harvard, Yale look? That is what the client would like to have a hint of a feel for their new logo. Let me know if you have any questions