Among your option, SRTM DEM is better. But I prefer CartoDEM as it is high resolution data for Indian continent. You must try it and find out the difference between the output of SRTM and Carto- DEM
ASTER DEM is better for morphometric analysis purpose also SRTM is better for related parameters identification. see the link: www.jrsgis.com/articlefiles/Volume2issue123/JRSGIS12027.pdf