Logitech Performance MX Wireless Laser Mouse with Darkfield Laser Tracking (Tracks on Glass)

I bought this mouse about 4 weeks ago as my old laser mouse was past it. After the initial excitement of having a wireless mouse for the first time, I started to notice a few things that just take the shine off it. This is one of the most expensive mice out there and for the price you would expect flawless performance.

Pros:
- very impressive battery life, only had to charge it once after 4 weeks use
- Tiny USB dongle, great for laptops.
- no wait to sync with PC (turn it on, start navigating)
- Works with Playstation 3 for navigating menus and web-browsing, not games though :(
- free wheeling mouse wheel makes scrolling up or down a breeze

Cons:
- I've got large hands and I end up holding it in my fingers which isn't as comfortable as my old mouse.
- Noticable jerkyness during games (this could well be an issue my old laptop and not the mouse), not as smooth as a wired mouse.
- side navigation buttons too far back on mouse to be truely comfortable.

All in all I'm happy with my purchase, but whether it was worth the money or not, only time will tell.

After thirty seconds of use with this mouse I realized a massive design-flaw.
The laser tracker is placed on the left side of the mouse and does not account for mouse angle, this means that by moving the mouse left to right using the natural pivot-point on the wrist will cause the cursor to draw diagonally towards the top-right of the screen.

This is horribly unintuitive and it seems as if they have forgotten all the basic principles of practical design with this mouse.
Other than this huge deal-breaker, the mouse rests comfortably enough and it looks great, but honestly if the mouse doesn't work properly, none of that stuff really matters, so I'm taking away three stars.

2/5.