A number of years ago I stripped the gears our of a K5A Kitchen Aid mixer
while kneading some Rye bread dough. I have been super cautious since then.

I just found on Craig's List an A-200 Hobart 20 qt. monster at a price that
I couldn't pass up. However, it didn't come with a dough hook. There are
two types of dough hook for this mixer. One is built like a C and is just a
bigger version of what I have for my Kitchen Aid. The other is called a
spiral hook and as the name implies looks sort of like a stretched out cork
screw.

Has anyone used one of these spiral hooks and where are they better/worse
than the traditional C?

Thanks
Paul Gilbert