Baby Formula for sensitive stomachs

Hi, I've been looking through baby formulas from France, as we are going with our infant son. He currently uses Similac Sensitive, for sensitive stomachs. I know they don't carry this in France - I'm looking for an alternative. I cant' figure out with formulas are sensitive formulations, or lactose free. Or maybe one of the partially broken down ones. Can someone help me with a list of both step 1 and step 2 baby formulas for sensitive stomachs? Or lactose free ones?