Excellent, fast and silent
It's pretty much the best in terms of responsiveness (optical switches, 8khz hyperpolling....).
I think it's magnificent, takes up very little space and is VERY QUIET compared to my old Corsair K70 Rapidfire.
It's the equivalent of a linear switch. I'm very happy with it for my complete razer setup (blackshark+nommo+deathadder+......). I wanted to unify everything under razer synapse, which I find very successful.