We have a Datastorm as well. We fulltime and use the DS for our business. If you enjoy being on the internet you'll really like the datastorm. Anywhere in the country, middle of nowhere, you can get online.
That being said, it's about $1100 a year for service, so if you're only using the motor home for a few weeks of that it might be a little expensive. I'm not sure what the shortest commitment is for service. Check out that forum link that Dick gave above.
Mac & Chris McClellan www.MacAndChris.com
2001 National Islander, 330 Cummins