Both the options are equally good. Choose one depending on what excites you more. If finance interests you then go for CA and if you are interested in company law then go for CS. Both have their own benefits. You can check below for a bit detailed information on the same.
Chartered Accountants (CA) enjoy a statutory monopoly in audit of financial statements under the Companies Act, 1956, Income Tax Act, 1961 and various other statutes in India. Financial statements audited by a chartered accountant are presumed to have been prepared according to GAAP in India (otherwise the audit report should be qualified). CA should have in-depth knowledge in accounts and other related parts like company law etc. Whereas cs should have to deal with company law and has to deal with the working of an organization. The major contribution of Company Secretary (CS) is in corporate sector.
Company Secretary (CS) is an important professional aiding the efficient management of the corporate sector. Company Secretary (CS) is designated as an officer under the Companies Act. Company Secretary (CS) has to interact, coordinate, integrate and cooperate with various other functional heads in a company. ICAI is the only licensing cum regulating body of the financial audit and accountancy profession in India. ICSI is the only recognized professional body to develop and regulate the profession of Company Secretaries in India. So, both courses are good and have tremendous market demand but the most important is to understand the interest of student and choose appropriate course.