dude i have been using the MS optical comfort 3000 since many monthsand I can tell u that for normal work and even budget gaming this is a highly ergonomical and fits perfacts in my hand unlike the MX518 which is gigantic
^^ heh not me, i bought it for my friend here and he still curse me now :rofl:, even i felt the same thats why i bought MX518 and when he tried mine, you have to see his expression(it was burning me :rofl, anyways he bought a G5 a month back