personally..i suggest u go try out the mouse and see which is comfortable while using,not just placing ur palm on it..actualy i suggest u stick with mx series and get mx518..but u hav issues wif the rubber sides..the sides of my 2year old mx500 din really bother me much..another big mouse is ime3.0 or ime4.0..i first used mx500 then i bought a krait..being so used to mx500 , krait is a bit small and low for me though its tracking is good and i just sold it today at the garage sales..if u control ur mouse just using fingers,i suppose krait will be ok and its damn cheap for a 1600dpi mouse..but if u control using ur palm too, get big ones which are the mx shapes or ime3.0..u can consider diamondback,its a wee bit bigger than krait,but im not sure by how much..and copperhead is off ur budget i guess?by the way, the laser technology not so stable yet..and i dun think u need 2000dpi..i would say mx518 or ime3.0 or ime4.0..anyway, just get a mouse u r comfortable with..like mentioned b4..worst case(like mine) : if u r not happy with ur mouse,there is always the lowyat GARAGE SALES !! gotta love it !