We have the Xtra-Ride warranty. I have to admit, they are a really good company. They have never given us a problem about any claim we have made.
The price difference might be the warranty coverage. There are several different levels of warranty. Also, there are several different deductible amounts you can buy.
I don't know about any other warranty companies, but XtraRide has been great.
2005 Itasca Horizon 40FD