I signed up, and it’s mostly the rate and the ease to have rewards just deposited right into the account. The daily cash account seemed to always be used to pay off the Apple Card so it’s nice to have something where the money just accumulates.
I haven't, but I'm guessing the interest rate (4.15%) on its own is a big draw
It’s this. The biggest limitation I saw was that you can only transfer out $20k per 7 days, no wire transfers.