(History) I had last mice from Razer and Roccat. As a left-handed selection is unfortunately very modest if you want a few more keys. When Razer was in the summer of adhesive liquid on the side parts and I always had sticky fingers (was unhesitatingly exchanged but judging by the comments a famous continue auftrtender deficiency) in the Roccat could no longer just click after 1 year, it has always executed at least double. So even this mouse was unusable. Unfortunately the (Amazon-) was merchants from Luxembourg and has done everything to be in order to press an exchange.
(For Sensei) Top product, well made. Great design. Within easy reach of modifier keys with large hands. Would buy me immediately again.