Which is most practical of the Project Planning, Monitoring and Control Tools?

There are various tools and techniques available in literature for Project Planning, Monitoring an Control. They are CPM - Critical Path Method used in cases where is the activity durations are deterministic in nature, PERT, Program Evaluation Review Technique - used with a three point estimate (Optimistic, Pessimistic and Most Likely Values) and modern day method CCPM - Critical Chain Project Management developed by Eliyahu M. Goldratt, where in the Buffers management is given prime imporatance. The debate is on which of these techniques is most practical and what are their merits and demerits?
I have applied both CPM and PERT in the past and found that their credentials are effactive only during the planning stage. These techniques are not that handy during the monitoring and control phase of the project.
Where as CCPM looks more practical with its buffer management technique at the Project Level instead of dealing with activity level floats. This enforces a better control on excution of the works and aids us in contigency planning based on the amount of buffers utilizatised as we more through the project. Resouce management is also effective in this case.