Hi! Can someone help me out a little - is 1.8mpd (AMEX highflyer card) better or to get 1.5% cashback better? If I have an amount of about $950 to be charged.. thanks!

It ultimately depends on how much you value miles. IIRC, The Mile Lion values miles at a minimum of 1.5cpm (cents per mile), so 1.8 mpd translates into a value of 2.7% cashback, which is higher than 1.5%.

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But this is really dependent on how you end up using your miles. The general consensus is that it's more worth it to redeem miles for business class flights - the value of miles when used on economy flights aren't that high.

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So the question is, will you be willing to essentially 'pay' for business class flights but get them at a discounted price? Or are you the type who prefers flying cheap (economy or budget) to save on travel expenses?

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If you're not convinced you're into miles yet, I'd say just go for cashback. 1.8 mpd on $950 won't get you much if you aren't already collecting miles.