Yeah razer are on top of the click latency these days probably due to the optical switches and its pretty noticeable if you play fast fps. Logitech are only slightly behind. The sensors on steelseries had never been great either, not sure on that particular one but they always seemed to choose non-perfect ones with accel years ago. Razer are currently going through their range making new superlight wireless versions - good chance they'll get to the naga eventually. Not much between the wired naga x and aerox 9 in weight I see (80ish). The wireless 115g naga might feel better on a faster pad like the Endgame Gear mx390, got a friend that wont move off the heavy deathadder pro until the new ones out