Everybody's touting the amazing reliability of Samsung SSDs.
Well, when they do fail, Samsung refuses to honour the warranty.
They sent me a letter which I was supposed to forward to the seller (Amazon.ca) to ask for warranty services. That happens 18 months after purchase and Amazon (or any other seller) only covers warranty for a few months or at most 1 year after date of purchase.
As a result, I'm stuck with a failed 860 PRO well within the 5 years of warranty that Samsung boasts.
Lesson learned: never buy Samsung products again!