They both get close to 100$, The Razer Orochi has a bigger focus on gaming and the Logitech Performance MX is more of a Studio Mouse, I don't really do gaming but I do need a good mouse. Both of them are also Hybrid, meaning that you can use them Wirelessly or you can plug the USB Wire in and use them when they charge. The single reason I even consider the Orochi is that it has Bluetooth, meaning I can use it on my MacBook Pro without any USB Dongle, while the Performance MX, uses a teeny tiny USB one. I will also use them on a PC Desktop on a Glass Desk, where the Logitech wouldn't need a trackpad because it has the Darkfield Sensor that works even on that. Which one would you get?