I've had a bit of comms with Brian Pitstick, Dell's XPS Product Manager, and today he sent me a response that I've added to the article and include here for your info.
Bob
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Update - June 5 -20:00
Brian Pitstick, XPS Product Manager, has responded to this article and associated forum thread, saying,
"Sorry to hear that you did not like the build quality of the M2010. We have put a lot into this to make it as robust and reliable as possible. This is why we have our own in-house testing and design engineering teams and are designing systems from the ground up.
"Dell puts a lot of investment into driving a very high standard of quality across all products and this is no exception. We will not ship it if it's not ready for customers.
"See the following link for more information on Dell's quality and reliability design parameters (
http://www.dell.com/roadready). Also, we have a dedicated usability and industrial-design organisation that does extensive testing with our customers during the development process. The overall form-factor choice was a product of direct customer feedback we received."