I would recommend BPCL Octane if you have a BPCL outlet near your home/office and have a Bharat gas cylinder as it gives a flat 6.25% and 1% surcharge waiver. Consider this only if you have less than Rs.10,000 spending on the above categories. This can also be a go-to card for offline purchases like grocery, departmental stores, etc. as it gives flat 2.5% cashback.