I'll take any tail type as long as it's uniquely colored. As LBF said, I'm less likely to go for long finned fish and snatch the PKs, but if I do want a longfinned I'll look at VTs first. Unfortunately our PetCo only gets the reds & blues (With the occasional Cellophane... my Chocolate Orange girl was a lucky find) so I don't often buy them on my own accord. I've rescued two of my current VTs and bought two.
Lucifer, Gabriel, Titan, King, Finnegan, Fin-again & Ricky.
Lucifer & Gabriel are my only non-rescues...