I found it was cheaper and more practical to just buy a 300$ netbook
in the end.... As much as I hate PCs it also allows me to use Delormes software now as well for navigation right in the vehicle.
Overall though, the monthly cost of a netbook to have the net on the go may not suit everyones budget whereas the one time charge of a unit would be easier to handle. Of course, if you are just using it to wardrive for your net access, I guess you'll be ok.
There is a very fine line between 'hobby' and ‘mental illness'. ---Dave Barry