1. Physical controls that you can interact with without the need to take your eyes off the road

2. Touch screen that you need to look almost every time, much of the time while actually interacting with it. But you can mitigate that by using it more responsibly, waiting until you are at a stop, our out of range of anything you might need to react to (which might not happen for 10 minutes or even longer)

Then #1 is clearly the winner. Because 2 is more dangerous for everyone on the road (not just you with your own behavior, but everyone else that might act irresponsibly and hit you). We specifically craft laws to make people interact with their phones less (hands free only, etc) because "people must act more responsibly" is not a reliable solution.