Razor Lachesis

Hello everyone thinking about buying a mouse, but not safe to buy SteelSeries Xai or razor Lachesis. Currently, using a Steelseries Ikari Optical and had a Copperhead Razor (Sucks). You want a good mouse to play mainly play FPS games pls help.

If u think there is a better mouse pls tell me about it.

You can take a look at the roundup mouse game here:
http://au.gamespot.com/features/6184762/ ...

Personally, I prefer the G7, but I tried a Lachesis before and find the shape of it more comfortable. The G7 has more buttons but that's why I stuck with it.