What are some of the best run/most cutting edge family offices? Little doubt that the field is growing, but there isn’t all that much public information (presumably by design). I’ve heard of Bass/Rainwater/Scholes as sort of pioneering back in the day, but not much more than that.
Gates/Ballmer/Allen
Have you tried the FO list at http://www.euromoney.com/ I know that Picet is very fond of their ranking there.
Met a couple of the Pritzker FO alternative asset guys–they seem pretty smart.