.....is the mouse worth it? cause read some reviews doesnt seem to be that great
I wouldn't put much stock into what you read
the dimensions are 115 x 63 x 37 mm x 40 g. it uses the same Avago 3688 sensor the DeathAdder uses, has a thin USB cable so there isn't much drag and it doesn't have a rubberized coating on it, now there is nothing wrong with the rubberized coating Razer uses but it does tend to peel. the only problem with it appears to be the microswitches in the mouse sometimes they double click when you depress once, sometimes they squeak in any case applying some WD40
which evaporates rapidly can make a improvement. because of it's size, weight and the extra buttons are on the bottom this is a great mouse for claw grip players.
I know some of you in this thread use the OCZ Equalizer and I can tell you the Razer Salmosa is a significant improvement in terms of speed and tracking. the shape and comfort is up in the air. the OCZ Equalizer is stuck at 125Hz and even if you overclock the USB port to 1000Hz and it says it's at 1000Hz the mouse will still be stuck at 125Hz this is not a driver issue it is a hardware issue and because it uses the Avago 6010 sensor it has tracking issues at low speed on hard surfaces like it's cousins who share the same sensor the Microsoft Habu and Razer Copperhead.
PS, there is another version of the Razer Salmosa called the Razer Salmosa Asian Pro-Gaming Edition aka Mini-Edition which isn't available in North America but you can purchase one on eBay. the difference is the dimensions it's 95 x 54 x 33 mm and it doesn't have a polling rate button on the bottom meaning it's stuck at 125Hz however the USB port can be overclocked to 1000Hz.