OP here...
Thanks all for the replies. Like I said - AAA has been great, but we've never heard great things about them dealing with RVs, which is why we went with Coach-Net.
We found it odd that Coach-Net couldn't find anyone who has heard of them in our local vicinity. That gives us pause on expecting to find service traveling across the country.
When talking to them they said they would pay if they couldn't find anyone. But - in my case last year I had to wait about 2 1/2 hours for them to even find someone. They said they wouldn't pay if I gave up sooner and called someone myself.
It looks like most of the time (probably not in the middle of the night) Coach-Net has done a good job... And gbopp may be correct that we may be best served by carrying both AAA and Coach-Net.
I do realize after reading many reports from folks with different roadside assistance providers that the responding local company is often the one to be happy with or cranky at. But - if they can't even find a local responder that knows who they are and will work with them, that scares me.