I absolutely love my mouse. It has adjustable sensitivity, adjustable weight, great design overall.
http://www.newegg.com/Product/Product.aspx?Item=N82E16826104076
This mouse is next on my list though.
http://www.newegg.com/Product/Product.aspx?Item=N82E16826105071
http://www.newegg.com/Product/Product.aspx?Item=N82E16826105071