Final Mouse 2015 SE   - 4 small mouse feet in corners  - recent skeptical build quality as reported by some users  - 500hz polling rate  - change DPI on bottom  - DPI indicator on bottom    Zowie EC1/2-A  - 2 large mouse feet   - overall consistant built quality   - 1000hz polling rate   - change dpi on top   - bright led indicating DPI with no choice of color per setting