So I have been using a Diamond Club card for years, obviously latterly collecting Avios points. Now its being discontinued what would you suggest is the best card to go for?

I generally spend about £500 ish per month. I thought about the British Airways American Express card however am concerned about the lack of a second (visa/Mastercard) to use where AMex isn't accepted. Can this card be used with Android pay?

Any other suggestions to maximise what I spend?

Thanks