Mr. D’s Diner • La Verne Why Mr. D’s Might Actually Have the Best Burger in La Verne TripAdvisor has us at number two. We respectfully disagree. If you’ve searched for the best burger in La Verne, you’ve probably come across rankings like this one on TripAdvisor. And yes—we’ve seen it. Number two. Right behind In-N-Out. We get it. It’s …