"A small, light laptop makes an excellent second
computer--unless it costs more than your first.
"The computer industry has been taking its time to grasp that
point. The smallest, lightest computers have routinely sold for
$2,000 or more, with most under-$1,000 offerings limited to heavy,
bulky laptops that can't stray far from a desk or a power outlet.
(Dell has one under-five-pound machine that starts at