I'm about one-third through The Sovereign Individual. It is quite remarkable and clearly written. One key thing that I think it is getting somewhat wrong is technology. While it correctly recognizes that information technology can give a huge sovereignty uplift to individuals, it does not (yet at least) talk about the flip side of the tyrannical possibilities that it provides to states. 
Also, the authors seem to have underestimated the amount of global collaboration taking place between industrial states in order to effectively control their populations. 
I'd be very curious about your take on it!