I'm troubled by the following (cut from the Bushnell site):

" XM WX is "professional grade" weather that a pilot or mariner must
interpret to understand the weather threat potential. What makes XM
NavWeather unique is that the interpretation of the weather data is done for
the user, providing clear information on current, future, and threatening
weather conditions."

http://www.bushnell.com/gps/gps_feat...=General%20Use

I'd be interested in what "dumbed down" weather looks like. ;-)