Mouse for gaming

[MireMare]

Now that I've got a good PC again for gaming I'm thinking about getting a top mouse for gaming, and a bigger mouse pad! Does anybody have any recommendations for good pieces of kit to get?

I mostly play first person shooters like Crysis etc.

Thanks.

 

[MireMare]

Thanks! I had no idea you could get a mouse with number buttons on the side, amazing, standard left, right mouse buttons and a wheel that you can also click will do me fine I think. I'm thinking a budget of £50, I do like the mouse to be sensitive but I have no idea about what dpi I require, using a lead doesn't bother me as long as it doesn't get tangled so it doesn't have to be wireless.

Loads of great suggestions here chaps, thanks, I need to get my hands on a few of these (literally) so I can judge how they feel in use.

The user defined bitmap thing on the Sensei is a cool feature.