HI,

INTERMS OF 

 Infrastructure,College Life,Industry Exposure,Affordability,Student Crowd ,Faculty BOTH the colleges have there own advantages 

and both need to give entrance exam like CAT, MAT

but if you want to go for low investment with good ROI i would suggest School of Management Studies, University of Hyderabad,

where as Siva Sivani Institute of Management, Secunderabad being private has good placememnts like SMS -UH but fee is comparative high then university of hyd.

so based on various factors you can make a choice which to chose 

I Would recommend you to chose  School of management studies University of Hyderabad