amex gold for dining and groceries. Chase csr for everything else.I think Venture is a travel rewards card, so if you travel frequently it will be preferable. Otherwise, Quicksilver is an OK cash back card, although it seems like when you hit a certain threshold you can only put the money towards your statement. You should go for the "non One" version of the cards if your credit score is good enough.
I thought they were targeting the same segment of the market. Wouldn't you just be cannibalizing one of the cards?