Logitech is the way forward. The slope on the mouse is ergonomically designed. The looks, i.e the blue light, and the semi-see through casing gives it style. The cord is thicker than MS ones which make it withstand more, and generally if you look on these forums its like every other day a MS one dies and a thread comes up... with Logitech there is one post about it going wrong once every blue moon...
So Logitech it should be.
Hope this helps,
Albert.
EDIT: For you there will be no L.E.D if its cordless and also it will have no cord, but everything else is good with it and solid.