we  had the shandon cadenza immunostainer for 3 years.  then we purchased
the ventana es stainer and now have 2 modules of the ventana nexes stainer.
we do a lot of slides and often have all three stainers going.  we have had
good luck with ventana, however, they have been modifying dispensers which
has at times been difficult.  other companies are coming out with antibodies
maximized for the ventana.  zymed and signet have v-line antibodies.
however, you still have to buy and fill a dispenser.  if you need any other
info   feel free to contact me privately.