Just come across this website while looking for reviews of the Wolf Garten Soil Miller:
www.fredshed.co.uk Fred's Shed - unusual garden tools reviewed(ish).
A great site for finding pictures of tools you've heard mentioned but thought obsolete: a combined fork and spade called the spork and a new replacement for the obsolete Wolf Terrex Autospade.
By the way if anyone has tried the Wolf Soil Miller please let me know if it works. Does it create the fine tilth it promises?