Is It Recommended to Use My U.S. Credit Card for Payments in Argentina?

I need to figure out the best strategy for payment for my 3-week solo travel in Argentina. I am living in the US now and have credit cards that doesn't charge foreign transaction fee. Is it recommended to use these credit cards for payments in Argentina? In this way am I paying US dollars or local currency? In my previous solo travels I just withdrew cash from the airport ATM using my Chinese debit cards, but this might not be a good idea anymore since I have US credit cards now.