Newegg offers the Logitech G302 Daedalus Prime USB Optical Mouse, model no. 910-004205, for $19.99 with free shipping. That's $5 under our September mention and the lowest total price we've seen. (It's the best deal now by $5.) It features six programmable buttons, four sensitivity settings (up to 4,000dpi), 1ms reporting, and metal spring right and left buttons.