Tesla and SpaceX CEO Elon Musk has once again expressed his admiration for an Apple Inc. (NASDAQ:AAPL) product, but it’s not the tech giant’s most successful product, the iPhone or its first-generation mixed-reality headset, the Vision Pro. What Happened: Over the weekend, Musk took to X, formerly Twitter, to praise Apple’s headphones. “The Apple headphones are great.” Subscribe to the Benzinga Tech Trends newsletter to get all the latest tech developments delivered to your inbox. In the comment section, some users agreed with the tech billionaire but suggested that Apple AirPods come with a c…