spiral mixers, pros and cons

What are the pros and cons of spiral mixers ?

I have never used one, eventhough I have heard they are a little faster than planetary and they make a better finished dough, whatever that entails. Some bread makers swear by them.

Large ones are made to be used in large operations, though
Doyon makes a 30 pound flour capacity, 50 pound dough ball, spiral mixer that I understand has a # 12 hub on it for attachments.

Anybody with experience with spiral mixers, please comment.

Otis

here is some information on the pros and cons of spiral mixers:

  [http://groups.google.com/group/rec.food ... de2368f38c](http://groups.google.com/group/rec.food.sourdough/browse_thread/thread/96ec7394c859645c/690c8cde2368f38c?lnk=st&q=spiral+mixer&rnum=4#690c8cde2368f38c)