Dear candidate out of IIIT Kancheepuram and IIIT Sricity, both are renowned institutions. However if you think of the stream, only if you have profound interest in Electrical Devices, Electrical Circuits then only choose ECE or Computer Science Engineering is a very interesting branch and Placements are often more satisfactory. Go through the below links to know more,

https://www.careers360.com/university/indian-institute-of-information-technology-sri-city

https://www.careers360.com/university/indian-institute-of-information-technology-design-and-manufacturing-kancheepuram

Hope it helps to choose!!

Good luck!!