The new Pleco was purchased from a very trusted source..never had a issue.
That being said, I agree with you.. I am setting up a tank for quarantine and also a larger 40 gallon tank to house just my Plecos.. I've become quite fond of them
Hare are a few more shots~

(larger L333)

(smaller L333)

(LDA67 Clown Pleco) - this one has doubled in size since this was taken

(L187b bulldog) - this one has also almost doubled..very healthy and has a nicely spotted head now.