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Purely from the viewpoint of wanting to help someone get their scores off to the right start it's the CapOne QS hands down. Even for it's relatively young age it's better than nothing and assuming everything is fine with the card (payment history, decent limit, etc.) your brother will inherit all the history with card. AMEX does not backdate AUs and with it being a charge card will not have a credit limit to report to the bureaus. Creditors don't differentiate between "premium" cards and "regular" cards it's all the same to them when they take a peak at your reports.