I went with King as opposed to their competitors because I told myself the study product decision was "Understand OR Memorize". As an AvGeek, I didn't just want to memorize answers to pass, I wanted to truly understand. From the reviews it seemed that King does a good job of actual instruction, and I must say that they delivered in that regard. Sure, the videos have a bit of a dated feel but the content was solid. That being said, to truly be successful I had to "Understand AND Memorize". Even after consuming all the video content and practice questions, I still did a fair bit of memorizing questions and answers, which paid off, because I recognized 58 out of the 60 questions on my exam.
Private Pilot Ground School & Test Prep