Yes, masks are the CDC recommendation. Here are a few articles that discuss shields.
From the NYT
“I’m a huge fan of face shields,” said Saskia Popescu, a senior infection-prevention specialist at George Mason University in Fairfax, Va. “But I don’t think we can swap them out for face masks just yet.”
Dr. Perencevich and his colleagues expect that more research will show shields to be superior to cloth masks, not only because shields provide full face protection but as they are nearly impossible to wear incorrectly.
“Remember, effectiveness depends not only on the inherent properties of the facial covering but also how well the facial covering is worn,” he said.
And he and his co-authors like to imagine that people who are reluctant to wear masks will find face shields more comfortable: Once a person tries one on, they say, the wearer realizes its many benefits.
Here is an article by AARP on masks and shields
Amesh Adalja, M.D., a pandemic preparedness expert at the Johns Hopkins Center for Health Security, says, “There's a lot of at least biological possibility to suspect that [shields] are definitely better than homemade face masks, and maybe even better than other types of masks as well, because they not only prevent you from spreading it … [and] because it also covers your eyes, it provides more protection to the mucus membranes of your face where you might be getting infected.”
James Cherry, M.D., a distinguished research professor and infectious disease expert at the David Geffen School of Medicine at UCLA, says that while experts aren't yet sure about how vulnerable our eyes are to infection from this coronavirus, “With many viruses, the eyes are important.” He points to measles and adenoviruses as examples of viruses that are known to infect people through their eyes.
So basically, I am hedging my bets and I have both.