The EU has permitted the Biontech/Pfitzer vaccine and the vaccine by Moderna so far, if that helps you. AstraZeneca might get the EU permission in January.
Not sure also how the infrastructure in India is currently - the Biontech and Moderna vaccines requires cooling to -70°C for transport and storage, The "Oxford vaccine" by AstraZeneca requires only -20°C.
The BionTech vaccine ("Tozinameran") is currently the one with the highest reliability, reaching an average of 95% in tests, Moderna is just a few permille behind. AstraZeneca only is 70% reliable, but easier to use.
No such information about Sputnik V at all, while the Chinese producers at least produce normal looking test reports, though there are some doubts about the quality of their tests. The behavior how they tested the vaccine in Turkey or Brazil is pretty dubious and they only released results in a strangely selective way. Pretty much in a way like "9 out of 9 patients never caught COVID with our vaccine.", when initially starting with 100 test persons and little is known about the other persons or how long they had been monitored....