Hello Sujit,

Aditya Group of Institutions is a national education chain that consists of both schools and UG and PG colleges. It has institutions in different states across India.

Aditya College of Engg, AP is a single college of Engineering in Godavari district of AP.

Although there is no way of measuring a best, one could say the group of institutions was better as it provides education at diverse levels and has placements at IBM/TCS.