Hi all,
I'm looking for advice on the best card that my partner and I can use for shared expenses.
Background: we each have our own stable of personal cards we use to pay for our own stuff (and keep the points for ourselves

). Right now that's a Sapphire Preferred for each of us. But there are certain expenses we share -- I'd say 90 percent of it is meals/eating out and groceries. Right now we put all shared items on an Amex Costco card, but I'm not convinced a cash-back card is our best value.
Totally open to a points/miles earning card, on the theory that we could use the points for a vacation together, etc. (Would like to avoid co-mingling any "shared" points with the personal accounts we now have.) Any thoughts? I was contemplating the Amex SPG card perhaps..