I am happy user of Anker mouse and I must say - I dropped it so many times, but it works great. My wireless Microsoft mouses, while great, had average life of 1-1,5 year (I am using mouse ~10-12 hours a day). Anker is with me since almost 2 years and only visible sign of fatigue I can notice is that brand name wear off from the face of mouse.

Great quality for silly price.