I just saw your post and changed the guide with the +1 only to see it's actually +2.
Thanks for the help, here is what I updated:
EDIT 4-20-2008
Added information on the Demon Lords
Removed information about the Crone (she can no longer wear multiple booster rings due to the recent patch)
Added information about Hidden in Sand, courtesy of Cleveland
Minor revisions and addition of research requirements in some spots