Most people aren't aware of this, but Panasonic briefly experimented with a NotSoToughBook before settling on their current systems.
There's too much data on each individual company for us to drill through here but when the dust settles, Apple, HP, and Lenovo all come out quite well, with Acer squarely at the bottom. One distinctly unpleasant trend LM noted in the survey is the number of companies that try to push you into paying for "advanced" customer service, even if you're calling well within the warranty period and, in some cases, with an issue that the original warranty should apply to.
We're glad to see Apple sitting at the top of the customer service chart given the company's prices. If, however, you intend to buy a system in the near future, we recommend reading over our story on laptop failure rates from last December. We've got nothing against Apple, but one of the less-than-shining realities of the company's failure rate is that the extra dollars don't translate into superior product lifespans.