It's not about criteria , just mine feel like Zowie clicks - semi stiff , on par with my G203 Lightsync. But , as i said , i do know what you talk about as i had similar experience with 302 and GPW , where just resting my fingers would cause accidental click , but that's rather Omron's fault than Logitech. Logitech have to produce stuff is mass quantity , bigger than most other brands and the shitty Omron China seem to be the only one who can fulfill their demand for quantity. Wish one day they invest in Hot Swappable feature like Asus or else move to Kailh switches - Kailh are superior in feel and would very likely prevent the double clicking issue with Logitech's gaming series mice which i believe is caused by the non-gold plated spring along with the HERO sensor efficiency (lower voltage). But , egh , its Logitech so likely wont happen.