After extended use I could see many computer users being very happy with the Saitek Obsidian. The dual battery packs and improved sensitivity over standard 800 dpi mice make the Obsidian great for those used to the lower sensitivity of many general use mice on the market. Overall the Saitek Obsidian would make a nice mouse for many users, assuming you can get used to the touch sensitive scroll.
Pros: Dual rechargeable batteries, Good cordless connectivity, Very attractive design
Cons: Touch sensitive scroll too sensitive for my tastes