4g dual sensor mouse

[Penguinz]

I'm in the market for a new gaming mouse, and I'm thinking about getting a new Razer 4G dual sensor mouse, the Imperator, for example. But I'm not really sure that it's worth the extra cost compared to the Deathadder, or other gaming mice from different companies. Do you think the extra cost of the dual sensor technology is justified, or is it better to stick with normal gaming mice? Maybe you can recommend something better? Thanks.

 

[Penguinz]

How does the 4g sensor compare to something like the Logitech G9X? Will I be able to notice a difference, or is it better to just get a G9X and a good mouse mat instead of the Imperator? I'd really appreciate some advice.