My primary premium card is the US Bank Altitude Reserve. $400 AF ($75 net AF after the very flexible travel/dinning credit.)
At $75 Net AF, it gives 4.5% cash back on anything Travel and ApplePay - which is practically all my in person spend since COVID has greatly enhanced adoption of contactless payments. It even gets better rewards at Costco than the Costco credit card. Completely worth it.
The AR's weakness is the Priority Pass being limited to 4 times/year. I can justify adding a 2nd Premium card with unlimited lounge visit especially if I rotate the sign-up bonus of other premium cards. Year 1 USB AR + Chase CSR ; Year 2 USB AR + CAP 1 VentureX ; Year 3 USB AR + Citi AA Exec etc etc; and this can be further stretched out if I only apply for the 2nd Premium card after I exhausted the 4 PP visits of the USB AR.