Hi Dave,
thanks for the pointer. I think I'll give that one a miss for now. I managed to pick up a saw last week from ebay. I'm waiting for delivery. I'll let you know how I get on with it.
I saw a demo of one at the south wales WoodFest the other week. Very impressive. Even though they hit a knot they still managed to beat the chainsaw.
Next I'll have to learn how to sharpen them properly. I'll probably post a question about that once I've got the saw.
Thanks again for the pointers,
Dave