If I had it all do over again I would opt for the passport card. Got a case of the cheaps a couple of years ago when we renewed our passports and decided not to spend the money. At the time both my wife and I had an active DoD ID, driver’s licenses, and passports so I didn’t see the need. I have since retired and while wife is still with DoD and has that ID card I don’t. That said I still have my passport and driver’s license, which is compliant and acceptable, so it’s not like I don’t have sufficient identification. Quite frankly I don’t share the concern that a TSA agent is going to memorize my address off my driver’s license and be involved in some theft ring that is going to break into my house while I’m gone. If that happens it more likely would involve airline personnel than TSA.