For what you've got going on, you might look at some of the Nav stuff with Sirius or XM built in.. I know there are several of those now that give you the option to have doplar radar overlays on your nav screen.. You know about all that stuff though right..???
Not sure if those nav/weather units tie well into a laptop, but there's a great RAM laptop mount available for the H3...
http://www.ram-mount.com/laptop_moun...aptop_desk.htm
Saw some other interesting stuff on the RAM page for Tablet PCs..
http://www.ram-mount.com/mount/mobil...anel_flash.htm
Rob