I have a 6 or 7 year old Patagonia SST. It's still awesome (bombproof), as is their customer service. I took a 4-year-old pair of SST waders into their Portland store last year b/c it finally developed a leak in the foot. They gave me a new pair of their latest, no receipt, no questions.
You cannot get their combination of quality fishing gear and customer service anywhere else. I think the SST jacket has another 6 or 7 years in it easy.
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If every fisherman would pick up one piece of trash, we'd have cleaner rivers and more access.