Have one through the dealer as well, not sure which one though. With all the electronics for the slides, the residential fridge, the TVs, I also think it is worth the investment. Our dealer actually has a CC that he can use to pay for repairs if we can't find a service provider who accepts the warranty. We had to have the air-cond replaced under JAYCO's warranty while on the road in Jan (Florida) and that bill was $1,300. When we had the SENECA the ext warranty paid out $1,200 for a new radiator. So they do come in handy.
If your dealer sells you the right plan you can also get partial refunds when you sell or trade. We got a $675 refund for the one on the SENECA when we bought the PINNACLE.
PINNACLE 2015 38FLSA. aka: "Roam Sweet Home"