I've actually tried some mice to find the right one for me and my needs. And here I have found it! The Sensei is wonderful in his hand, is extremely accurate and comfortable to carry. It is light and not too big, also non-slip. A downer there, however, and has been here already at least once called: The buttons on the thumb side facing away they keep coming off accidentally, so I disable these keys in hectic games. Besides, this is irritating at first but you get used to this shortcoming, which is due to the left-handed usability. The functions ExactAim and so on function terrific, I'm surprised how accurate shooters in à la Battlefield 3 hits. Conclusion: This mouse is worth every euro, the functions are super, the operation simple, the ergonomics right - wonderful!
Edit - APRIL 2014: Now I have the mouse for a while in use and must now but note a disturbing detail: The SteelSeries Engine, which is indeed necessary to configure the mouse (if you do not want to do anything with the integrated display and the profile option with executable files linked) is not really stable: For me it crashes repeatedly, and such that I have to reinstall them in order to operate it again reasonably can. This is extremely stupid! Otherwise, the unit is still top, if one cleans it regularly, because the shiny surface of each fingerprint is actually seeing.
