I had a Donovan DCC and I thought the harmonica was quite unpleasant. There have been negative comments about stuff on his site, but it would get deleted. It is his attitude, that of some of followers, and the way his forum has been run that has done him no favours.
Very interesting. I always saw nothing but very positive comments regarding this disk on his forum. I was never tempted to open mine and eventually sold it.
I've always been very happy with the 7 1/2 IPS reel of Donovan's Greatest Hits. Still have that one.