Whether Avios (the currency of British Airways and Qatar Airways) or Amex Membership Rewards is better depends on your flexibility and travel goals. In 2026, Amex Membership Rewards is generally considered "better" because it is a flexible "transferable" currency. You can move Amex points to over 12 different airline partners, including Avios, as well as Marriott or Hilton. This gives you the high-value ability to search for the best "award flight" across multiple alliances. However, Avios can be superior if you are a frequent traveler between the UK and the US or within Europe, as the "Reward Flight Saver" program offers fixed, low-cost redemptions. If you use an Amex British Airways co-branded card, you can also earn a "Companion Voucher," which is a peer-to-peer "win" for couples. In short: use Amex for maximum versatility and to protect yourself against "devaluations" of a single airline's miles, but focus on Avios if you are a loyalist who can maximize specific route "sweet spots" like short-haul European hops or Qatar Airways "Qsuite" redemptions.