I will say for me, this fits my hand and is very comfortable. It feels nice. It does not have that plastic feel, the plastic feels soft to me, so it works really well. I personally am keeping all the weights in it as I like the heavy feel. I took some out using it and you really can tell a difference for when the mouse lightens up. I did not think it would make a difference but it does. It glides really well for me, so all in all I would say this is a perfect mouse. It even has that all day feel so your hand will not get tired. It might not be much of a review but it is very nice and also well worth the money.
CONS: only think I might say would be it is very bright