Real Time AC Current Sensing
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  For this, I need a CT based current sensor which can sample data quite accurately and quickly (around 5% error, at least 50 times an AC cycle).


CT current sensors are "current transformers". They transform the primary current into another current to be fed to the monitoring circuit. They do not sample the current.


  These seem to do the job of calculating the rms current ...


No, they do not calculate RMS current. They don't calculate anything but attempt to drive the transformed current through the secondary load or burden resistor.


  ... and provide the data which can be fed to a data converter. 


They provide an analog signal.


  But none of them satisfies my need in obtaining a real-time continuous data of the current drawn by the load. 


Both of them give a continuous analog signal.


  It would be helpful if anyone could point me a better current sensor/system module which can be interfaced with a micro-controller to process the signals.


Have a look at http://openenergymonitor.org where much of this work is already solved for you.



Note that there are no datasheets available for either device you linked to. This means they are a bad choice. Amazon is not a recommended electronics component supplier.