I've been using Platy's exclusively in the last four years. No mishap whatsoever. They are light and convenient as heck.
I suspect Platy probably let loose entire batches of defective products??? Having read numerous posts about bottles and bladders, what I get are:
1. All the popular brands -- Camelbak, MSR, Platypus, etc. -- are very dependable.
2. All the popular brands above have the occasional lemon. Maybe most mishaps are due to user carelessness, but lemons do show up as well.