Not the best video this chap has ever done but could be helpful to a lot of newbie’s Who have asked this question.
As I said Jomarkh not the best one EVM ever done, very long winded, but it does give a few pointers as to which type to go for tethered or not. No contest in my book tethered it as to be.I am not sure if that was a helpful video or not for a newbie.