Decided it's time to break out a new course and start going through it on a systematic basis so I actually finish it (or get closer than I usually do). Thinking about one of these two because I bought them when they came out, and then never got beyond the Intro page. Anybody been through either (or both) of these to have a recommendation? I understand the CAGED concept, but have never had any real instruction on it. I'm guessing Chord by Chord is an expansion of Griff's every chord is the I chord concept. So my assumption is that they're both just a different way of viewing the fret board. Thoughts? What have y'all's experiences been with these two?