These days, news from airlines tends to be negative, dominated by rising airfare and jet fuel prices, but the latest development about Delta Air Lines is actually positive. American Express is making some tweaks to its Delta Airlines co-branded credit cards, and those are a net positive for current and prospective card members. Most Delta cards are getting new perks, which benefits people who already have the cards. There are also new limited-time welcome offers for new card members, who can get a big chunk of Delta SkyMiles when they meet certain spending targets.

Choosing among credit cards can be bewildering with so many on the market, but we’re here to help make it simpler, and in this case, it’s a pretty easy choice. If you fly Delta with some regularity — which can mean anywhere from a couple times a year with checked bags to being a road warrior with Delta Medallion frequent-flyer status — one of these cards is probably attractive for you. The least they can get you is free checked bags, which can easily be worth more than the card’s annual fee, and they can also give you benefits like access to airport lounges and a faster track to Delta status.

I’m a Delta flyer with the airline’s top elite status, and I honestly think these refreshed Amex cards are a good idea if you fly or plan to fly the airline more than just occasionally. Here’s what’s new about them and why they might make sense for you.