Which model of criminal justice is best suited to deal with crime problems of the future and why?

I assume that you are asking about Herbert Packer's two
models of the criminal justice system.  If so, I would argue that the crime control
model is more likely to be chosen to deal with crime problems of the
future.

The reason for this is that there are more and more
pressures on the criminal justice system even as the system is being given fewer and
fewer resources.  For example, the crime control model argues that there should be more
plea bargains and fewer jury trials.  I believe that this will look more and more
attractive as the court system becomes more and more overloaded.  Similarly, the police
are more likely to have technologies that will allow them to intrude more into people's
lives.  Their ability to do so will fit more closely with the crime control model than
with the due process model.

So, I believe that the crime
control model will be increasingly used in the future as a way to deal with crime more
efficiently.