Amex Platinum vs. Delta Reserve: Which card is best for Delta loyalists?

If you ask a Delta loyalist what credit card they have, they'll more than likely respond with either the American Express Platinum Card® or the Delta SkyMiles® Reserve American Express Card.Either of these cards makes a great case for a spot in a Delta fan's wallet; despite that, they have enough differences to make it important to carefully consider your traveling style before committing to one or the other.Committed Delta flyers will likely find the Delta Reserve more appealing, but travelers who place a high value on flexibility and lounge access may get more out of the Amex Platinum.Here's a full comparison of the key similarities and differences between these two cards, so you can choose the right premium card for your Delta flights.Amex Platinum vs. Delta Reserve: At a glanceCard featuresAmex PlatinumDelta ReserveAnnual fee$895 (see rates and fees)$650 (see rates and fees)Welcome offerFind out your offer and see if you're eligible for as high as 175,000 bonus points after spending $12,000 on purchases in the first six months of card membership. (Welcome offers vary, and you may not be eligible for an offer.)Earn two domestic round-trip Delta Comfort flight certificates and 50...