TechPowerUp takes a look at the ROCCAT Kone Pro
A quote from the article:
With the Kone Pro, ROCCAT expands their Kone line-up of right-handed ergonomic mice with an option between the big EMP and small Pure Ultra. Equipped with PixArt's PAW3370 sensor, optical switches for the main buttons, a flexible cable, and heat-treated pure PTFE feet, the Kone Pro is no slouch when it comes to specifications, either.ROCCAT Kone Pro Review