There are Geared Turbines & many are gear-less direct drives systems. For a universal use, how to control the maximum power point operation for wind turbine.
I suggest you consider doing some reading on the aerodynamics and mechanical engineering aspects with reference to wind turbines.
That will help you realise for yourself that there is in fact, no best technique - controls are framed according to different features of the source wind.
In fact, there is no best technique. Every technique has advantages and disadvantages. You should select a MPPT technique which is suitable for your system.