I've bought three BFG cards over the years. I figured "Oh cool, a pre-overclocked card. That'll save me a bit of effort". But all of them burned out in less than a week. I have excellent cooling, I had all of my settings correct, I didn't push the card any further than it was already clocked and temps really didn't seem that bad. But they all died on me.
All of the cards I replaced them with lasted MUCH longer, and always gave me better performance after overclocking them myself. And honestly, they were just about on par with the BFG cards performance wise even BEFORE overclocking, at the same or lower price.
Last card was the last chance for BFG in my eyes, I swore to never buy a card again. A few months later and they stop selling the cards? Coincidence? Probably, yeah. But still.