All three options are good in their own way but it ultimately depends on your area of interest career goals and opportunities.however in all of three DSCE is best in its curriculum and strong industry connection it provides research opportunities and good placement in reputed companies like biocon GSK etc.its location is also good as it is in banglore which is hub for biotech and health care industry where job opportunities are more.there is high demand of CS graduates in industry but in vemana fewer course options and electives available which blocks your future path.