Seeing the suggestion of purchasing Costco gift cards... what other cards would be optimum choice for this strategy should anybody out there have gone this route before. Looking to pay taxes this year through Plastiq or similar service. We are traveling to Martinique in January and Quebec in July and our Chase Reserve card offers cancellation protection and 3x on travel... so while we plan on some domestic travel in 2019/20... it is tough to figure the value of SW card spend over Reserve card spend.