I'll second what trotter says. The ExactMat is really good.
I have had mine for around a year, maybe more now. And if i gave it a clean you'd think it was new. The rubber feet are still on solid, the razer logo is as bright as ever and not rubbed off, and the surface is as new condition. It performs very well to, perfect traction.
As to the Lachesis being the DeathAdders big brother, i'd argue that strongly
More DPI, yes, better ? i think not - atleast in my opinion (i tried my friends lachesis). Not that it's any slouch, the Lachesis is still a brilliant mouse, just not to my personal liking.
Re: Need help on Gaming Mouse Pad. 
or 
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Linear Mode
