I put 4 stars and not 5. The mouse itself is great, accurate, fast. The only concern is that I have to buy the additional mouse pad to avoid nuisance stalls. (I had an optical base before and it did not happen ... The downside of the likely accuracy).
For the rest, the product is customizable to desire. Peas, dpi, speed programming. This is a complete mouse which I have not yet explored all the possibilities.