It would be prudent to listen to them both. However, it's valid to take into consideration who they are and what they've accomplished.
I found this video, from Dr. Dave, in less than 10 seconds.
https://www.youtube.com/watch?v=ytp3JX5BKAg
I found this video, from CJ Wiley, in less than 10 seconds also.
https://www.youtube.com/watch?v=RyTvfeqeh5Y
From an educational standpoint, which would you say is more valuable to someone looking for knowledge?