I am looking to buy an A4 portable scanner for my laptop when away from home.
Vista & probably USB & W7.
Has anyone had experience with wipe-over (rather than motorised sheet pull through) scanners?
How easy is it to get a steady pass and judder-free image?
The SkyPix (or VuPoint) seems to meet my budget (sub £100) and would allow me to scan book pages etc as well. The 'traditional' portable struggles or cannot handle non-A4 sheets.

Any other suggestions?