Never buy version 1.0. The integration of hardware and operating system software is extraordinarily complex, and manufacturers rarely get it right the first time. You'll save money and avoid misery if you get a slightly older, more proven model. Choose a laptop over a desktop.
Laptops now feature almost all the power of desktops.
They naturally integrate flat screen displays, which are much easier on the eyes. Further, all laptops have batteries, and batteries are uninterruptible power supplies. If the relative cost of the laptop vs. the desktop worries you, add the cost of a flat screen display and a UPS to the tag for the desktop, and things will even out. Hard disks are slow access, RAM is very fast. Buying a version 2.0 laptop with a boatload of RAM memory is the most effective strategy.