Pawan Kalyan (With immense fan following, no one can come in near in terms of following & Great Box office hits in past & Recent he is top. His flop movie collections will be better than many others hit movies)
Mahesh Babu (Next to Pawan in following. He is consistant in recent past with box office. Biggest advantage is media support & active in social networking & publicity)
Ram Charan & Prabhas
Both are having equally good potentiality at box office.
Prabhas is improving day by day, he is strong in A centers.
Charan is equally good in all areas especially B, C centers are added advantage, has to improve OS area. His main advantage is Mega & Pawan fan base. He is very strong in masses. Another advantage is Dances & Fights.
NTR: Comes next to Pawan & Mahesh in following. But very inconsistant. That made him to keep in back bench.
Allu Arjun: Equally good compared to Prabhas. He is strong in A centers, has to improve in B' C centers. His main advantage is great dances.