Starting to travel for work and need recommendations on a travel CC

I will be starting to travel internationally for work and need to get a new CC that helps me maximize travel rewards. I currently have the Delta Gold AMEX and I find the SkyMiles system difficult to navigate and the miles too expensive for the flights I am looking to buy with reward miles. I am very new at this, so I would like to try to get the most information possible.

CREDIT PROFILE

Current credit cards:

• Delta Gold Amex: $18,700
• Bank of America Alaska Airlines: $9,500
• Bank of America Reward: $16,500
• FICO Scores with source:
• Equifax, 750
• Transunion, 750

Oldest credit card account age with you as the primary name on the account:

• 7 years, 7 months

Number of personal credit cards approved for in the past 6 months: 0

Number of personal credit cards approved for in the past 12 months: 0

Number of personal credit cards approved for in the past 24 months: 1

Annual income $:

$70K

CATEGORIES

OK with category-specific cards?: Yes

OK with rotating category cards?: Yes

Estimate average monthly spend in the categories below:

• Rent: $1,000
• Dining: $150
• Groceries: $400
• Gas: $200
• Car insurance: $150
• Miscellaneous spending: $400

Do you plan on using this card abroad for a significant length of time (e.g. study abroad, digital nomad, expat)?: Yes

Other categories or stores with significant, regular spend (e.g. public transit, phone/internet, office supply stores, Amazon): Verizon?

MEMBERSHIPS

Current member of Amazon Prime, Costco, Sam's Club?: Amazon, Costco, and Sam's Club

Current member of Chase, US Bank or any other big bank?: BofA

Active US military?: No

Are you open to Business Cards?: No

PURPOSE

What's the purpose of your next card?:

Travel rewards - airfare mainly

If looking for a rewards card, do you prefer cash back or travel points/miles?

Travel points/miles

Do you have any cards you've been looking at?

Chase Sapphire Preferred, Chase Sapphire Reserve, AMEX Gold

I have been advised not to carry AMEX--some of the most remote locations where we will be traveling only take Visa and Mastercard

For reference, I will likely be traveling internationally 5-6 times/year.

My credit score recently took a bit of a beating as I just financed a new car, so I understand I might not qualify for some of the most elite cards, but I never carry a balance. I am also not sure whether paying the exorbitant annual fees are worth the perks to me at this point.