Spoke too soon. used the funds to order another HDD and they sent me recertified HDD. :(
They can send you through NEFT / Snapdeal Cash, i chose SD cash because its quicker.
Had a good experience with Snapdeal, ordered a internal HDD which was DOA. Contacted customer support and Delhivery picked up my dead HDD on the 3rd-4th day, refund was processed 2 days after pickup.
1 TB would have the lowest Rs/GB ratio so that would be the capacity to buy. There wont be any difference between SATA II/ SATA III drive performance because HDDs cant saturate SATA II interface speed.
For regular use green/blue/black shouldnt have any noticeable performance difference. Either...