There is Coach Net also. I have had both, only actually used Good Sams. Only reason I had Coach Net was we got a year free when we bought our trailer.
Good Sams does cover ALL the vehicles you own, I don't think Coach Net does, but I am not positive.
Good Sams were great when we called them, no issues, just signed for it and never heard about it again.
2015 32 Foot Rockwood 8289WS 5th Wheel
2013 Chevy 3/4 Ton TV