It depends on the type of programme you are opting for. Further subjects, one coaching may be good for 2 subjects while poor in 3rd.
So you will have to consider all these points.
Akash Institute would be considered better than Sri Chaitanya.
Sri Chaitanya has a slogan  NO PLAY AND NO WORK.
Akash is more friendly and career oriented and they focus on exams and preparation rather than all day tight schedule and just classes.