Hey so I might be in the minority here but I LOVE my razer deathadder, I'm not into razer products most of the time but this mouse has been my favourite for a long time, its perfect for my hand, build quality is actually really good and I think it even looks quite good.
HOWEVER.
The guys over at razer fucked up, on the left side of the mouse below the two side thumb buttons there is a rubber pad for your thumb to rest, this is a bit of a problem because that rubber irritates your skins really quickly, it's really uncomfortable after only a few minutes and if you spend a couple hours gaming its terrible.
Too solve this I removed the rubber pad
I used it like that for a while, thumb resting on the plastic, but then I had an idea so I grabbed some spare suede leather I had laying around, cut it to shape and glued it on, It was the best!! So soft, so subtle, its great!
it could have been neater, but i think it still looks alright and its a huge improvment.
leather finished mouse is the way of the future.
anyway just thought i'd share