Hey there!!

Amrita puri campus is better than Bangalore(since BLR is still a developing campus),

Infrastructure and faculty and also Alumni are good in amprita puri,  Even the good cultural mix of students you get in amrita puri gives an edge

Placements wise:On-Campus:ampritapuri , All major companies come to amritapuri campus and it's centralized placement. t he number of companies taking CSE branch is very high and CSE students bag the highest package every year from companies like Amazon,Cisco,Intuit etc

Hope this helps

Good luck!!