Depends on lot of other parmeters, Available options of cards, payment nature (Merchant MCC)
- Priority to be given for double dip / tirple dip options,,
- In case of excluded MCCs and acceptance of Amex, Amex Plat travel would be best (Assuming annual milestones are not met yet) till 4L payment,,
- Rest for Milestone dependent cards (Vistara cards)
Also, keep in mind that spending more than 10L in a single credt card may flag at ITR portal as notified transaction..