Polytechnicdiploma in SVEC is good as they share the advanced laboratories of the engineering college and library that has many volumes of technical, information technology and engineering books. And even the teachingstaff is highlyqualified those who teach for engineering and Phd courses.
Diploma is just a 3 years course and it is almost equivalent to Engineering in many small scale industries. I got to know that in SVEC diploma candidatesalso got placed in good companies.