I think both the courses BCA or B.Sc (Computer Science) are best and are equivalent to each other. There is no much difference these courses. Here I am providing you the details of the both the courses.

BCA course

B.C.A. or Bachelor of Computer Applications is an undergraduate Information Technology course. The duration of the course is 3 years.

B.C.A. Eligibility

10 + 2 exam from any stream with English as passing subject with minimum 45% marks at 12th standard.

B.Sc. Computer Science

B.Sc. Computer Science or Bachelor of Science in Computer Science is an undergraduate Computer Science Course of durartion 3 years.

Some of B.C.A. Specializations

Computer Graphics
Programming Languages
Database Management
Systems Analysis
Word Processing
Internet Technologies
Accounting Applications
Animation
Music and Video Processing
Personal Information Management

B.Sc. Computer Science Eligibility

10+2 or its equivalent examination with Physics, Chemistry, Physics and English

3 years Diploma Course after S.S.C. or Intermediate Commerce or Arts Examination are also eligible.

Some Institutes require only 10+2 pass with any subjects.

B.Sc. Computer Science Subjects

Computer Programming Theory
Electronics
Mathematics
Statistics

Top BCA colleges in India

Christ University Hosur Road, Bangalore
Madras Christian College Velachery Main Road, East Tambaram, Chennai
Institute of Management Studies A-8B, IMS Campus, Sector-62, Noida
Department of Computer Applications, SRM University 3 Veerasamy Street, West Mambalam, Chennai
Women Christian College No. 51, College Road, Nuhgambakkam, Chennai
University College-Kurukshetra Kurukshetra
DAV College Sector 10, Chandigarh
Xavier Institute of Computer Application Campus Navrangpura, P.B. No. 4168, Ahmedabad
Maharani Laxmi Ammanni College For Women Post, Malleswaram 18th Cross, Bangalore
St. Xavier College P.O. Box No. 32, Mapusa, Goa

B.Sc. Computer Science colleges in India

A.V. Kanthamma College for Women
Atma Ram Sanatan Dharma College, New Delhi
East Calcutta Girls College
Fakir Mohan College (Honours)
Government Science college
Indian Academy Group of Institutions
Institute for Excellence in Higher Education (IEHE) (Honours)
Institute of Technical and Professional Studies, Bhubaneswar
Kalindi College - Bachelor of Science in Computers (Hons)
Kalyan Post Graduate College
Karimganj College (Honours)
Kingston College of Science
Loyola Academy Degree & P. G. College, Hyderabad
Lyallpur Khalsa College for Women
Marathwada Mitra Mandal's College of Commerce
Netaji Nagar Day College
Noble Institute for Premier Studies and Technologies
P.G.D.A.V College
Scottish Church College
Shree Agrasain College
Sri Venkateswara University
Srinivasa Ramanujan Centre
SRPA Adarsh Bhartiya College
St Thomas College , Mathematics, Physics
St. Anne's Degree College for Women , Mathematics & Physics
Surendranath College
Taliparamba Arts and Science College with Mathematics & Electronics
Tata Institute of Fundamental Research, Mumbai
University of Burdwan
Yogoda Satsanga Palpara Mahavidyalaya