The "official" way of  finding out the best peers for a list  is to do an
'EXPLODE listname  (BEST n', where 'n'  is the total number  of peers you
are  prepared to  have (not  the number  of extra  peers that  you want).
LISTSERV will then suggest a list of  nodeids, and if you don't like some
of them  you can repeat  the process, adding a  'WITHOUT(node1 node2...)'
option, until you are happy.
 
Obviously  this cannot  be  100% satisfactory  if  'listname' is  already
peered and LISTSERV therefore has only a small subset of the total amount
of recipients in the LIST file.
 
  Eric