I think much depends upon what you want from the policy. As far as I am aware the Gott & Wynne policy covers only your Morgan (albeit pretty well)
I use the RAC (pretty much equivalent to the ADAC) who cover me and the 4 other members of my family in whatever car they are in , be it as a passenger or driver. Over the last 20+ years, each time I have used them they have been exemplary.
However the cost is a different order of magnitude at £200+ , but if you want all round cover for multiple divers and cars then I can recommend them.
