well, it is all a matter of opinion, Jim are you able to provide any clips of Terry Yarnell.I only saw him do a live gig once, that was at Groombridge folk club about 1973, with a couple of other members of the critics group.
I remember booking Faulkner and Dolores Keane at a club i was running in the late seventies, I was very impressed by both of them
i would like to hear   more of Yarnell, as a result of your recommendation.