Thanks alot, your reply really helps . And the logitech horror stories are true, I am still using their old software because their new G Hub software is a nightmare. I am probably going to go for the Razer Viper Ultimate based on everything I know. Just another questions, about the transition, I have medium sized hands but big fingers if that makes any sense, did you face any problems with the new weight and long sessions ? I sometimes felt my hands cramping with my current mouse (G900) a bit too heavy and not a good shape for my hand.