Everything you need, right from the Start
Put all your favourite Windows 8 apps, sites, and people on the Start screen, get live updates at a glance, and get to almost anything with a tap or a click.
Pros: New modern feel, potentially more stable, better use of modern technology (i.e. 3D video cards)
Cons: Expensive upgrade, DRM potentially harmful, UAC, activation hassles, marginal OpenGL performance