I was not aware of the SA1 when I bought the PP3, even though I often check the dynamism web site. It may have hit the sweet spot for a fully functional tiny laptop. I would be concerned whether Window XP (and some applications) would run well on a 7" 800x480 screen. Many computers used to have VGA (640x480) resolution, but on larger screens (so readable fonts could use fewer pixels). But if I was in the market for a laptop I might still buy it today. One downside of Windows XP for me is that there still isn't an e-book reader that supports the Plucker format.

One feature from the SA1 I wish the PP3 had is an external VGA connector. The PP3 has composite video output instead, presumably because of its consumer orientation (although VGA is on many new TVs). Given VGA out, I would plug the device into my USB/VGA KVM switch and use a full sized keyboard and large screen for some tasks when at home.

The standard keyboard on the SA1 is a must for a "laptop", but on the 770 and PP3 the touch screen is used for almost everything - so working on the SA1 would be a quite different experience. The keyboard on the PP3 is much better than an on-screen keyboard for ocasional input, but is an obsticle to its use as a laptop replacement.