All visuals aside, the Sensei is a great mouse. Pretty much anything with 1kHz polling and a dpi of 5k+ is the same nowadays, but the Sensei really does stand out with all the onboard goodies. Saitek's stuff is looks and basic performance, whereas the Sensei is performance and basic looks. Personally I use the G500 though, I can't live without being able to tune my mouse weight and neither do I need the onboard goodies - raw input ftw.