Took it based on experience
We just got the seven year deal, really 5 year. We debated back and forth but my experience with ext warranty is based on the one I bought for my Harley. I utilized two times, for the same repair. We were stationed in Europe and the plan paid for itself on the first instance. I did research on the Interstate RV warranty and found the field slightly, ever so slightly, in favor based on experience. So we opted for it. Not pushing it or selling it but just giving some FYI.
2011 Jayco Jay Flight 29 QBH
2011 Ford F-150 Lariat Screw, 3.5 Ecoboost, 6.5" bed, 3.73
K&N air filter