Jack, I hear what you're saying, too. The handheld devices and their software just aren't quite there yet. Give it another couple of years things should come around a bit.
The biggest problem that I have with all these handheld devices is a bit more fundamental. I want it to fit in my pocket, but I also want a screen the size of the NC (or better) so the device is actually usable. We're a good bit off from holographic technology, so for now I'm going to have to go back to parachute pants with giant pockets.