In many situations typical IPAQ displays are not easily readable in
the cockpit. If you have a collision alarm and spend time looking down
at a tired old display, you're defeating the purpose of a collision
avoidance system.
ClearNav, Ultimate and Altair will provide bright, readable displays.
Some others too (Samsung Galaxy Tab, Iphone, etc).
Besides a bright display, I believe the Butterfly remote will be
required for audio volume control.
Jim