We too bought the extended service plan backed by Good Sam for our 2005 359ts Georgetown XL. No need for it yet. (Fortunately)
The only down side I see is the high deductible but I keep thinking about the cost to replace the tranny or a set of hydraulic jacks. The plan seems to cover everything including the appliances.
The real bargain is the Good Sam road service. I get that for my MH and 2 autos for less than AAA with no limit on towing distance. Used it for a couple of minor things and it works great. Just don't get maps and AAA discounts.
Life is a journey, not a destination.
2005 Georgetown 359ts
Bill & Virginia, Kentucky
Nights camped in 2011...78 , 2012...73,
Nights camped in 2013...123, 2014 ...101