Many Thanks for all your comments.
I suppose that the result is 'Suck it and see'.
It would be great to try all these blades but, there always is a but, I live in a remote place in a forest in the north of England. If you could see the additional charges I face from customs and excise, boy, would your eyes water. This is along with gas at $9.80 for a US gallon.
My wife and I are off to Tucson in 10 days. We will be hitting the local Tandy store. I suppose that I will have to try the ceramic blades and come to my own conclusion.
Your comments have been most welcome.
Keep Karving.
Alan