If you are looking to earns miles purely for Y redemption, then M&M is the best program than EKs. M&M has loads of redemption option from India through its *A partners in Asia, and domestically within India (through AI/IC).

Just for an illustration, M&M requires only 30K miles (*A partner redemptions) from India to Africa (Ex: BOM-NBO-DAR-NBO-BOM on AI). Whereas EK requires 50K miles that too for saver awards which are harder and harder to find. These days miles are hard to earn in any program. Just because its EK, it doesn't make sense to shell out 20K more miles. But thats me. Decide based on your earnings likelyhood.