The punk pleco (neblinichthys pilosus) is by far one of the most sought after plecos so rare were talking thousands of dollars (if you can find one for sale).
I would love to have a zebra, but until they are more affordable I'll wait. I have a L260 which spends most of it's time hiding. The next pleco on my to get list is either a L109 royal
or a L014 sunshine pleco.