Hi Srinivas To Decide on a qualification, you also have to be sure where you want to work - whether in India or abroad. I will give you briefly. Hope it is useful.
CIMA - Costly, Marginally higher value addition than our own CWA if you decide to work in India. If you plan to work abroad an accountancy oriented qualification will give you wider acceptance than CIMA
CISA - Costs on the higher side. This Qualification was considered HOT a couple of years back. A Good value addition as it opens up opportunities in an entirely new field which has few overlaps with traditional audit.
CPA - THE HOTTEST. COSTLY. But it'll make you acceptable anywhwere in the world. Australia, Canada, UK....the best countries for immigration. YOU will be accepted without question.
CFA - The american one. Though you have not mentioned it. Its a very very good choice. A Indian CA, CFA can put you within striking distance of a US MBA @ a Good School. (This is from the experience of a friend). Also it can form the base of a MS in Finance/financial engineering which will be in demand a few years from now
Bye
Best of Luck