I was keen on getting a Bluetooth mouse to pair with an upcoming MBP purchase, to be used for very occasional gaming. In reading reviews, particularly customer reviews at Amazon, for even the top-rated Bluetooth mice, like the Razer Orochi, there are always some complaints of mouse lag. That led me to think that if even Razer's Bluetooth mouse can't execute Bluetooth well, perhaps I should consider getting a non-Bluetooth, cordless mouse, the ones with a USB receiver (what's it called? RF mouse?). So I'd like to ask, do non-Bluetooth, cordless mice have the same lag issues as Bluetooth mice? Are they better for gaming? (I'll probably be playing mostly FPS) The impression I get from the many reviews I've checked so far is that they do lag less and that the lag only appears after significantly longer periods of inactivity, unlike a Bluetooth mouse like the Orochi, which powers down after only about 3 seconds. If lag isn't an issue with these mice, then the Logitech Performance MX (http://www.logitech.com/en-us/mice_pointers/mice/devices/5845) seems most appealing to me. If there are some considered even better, I'd love your recommendations. Thanks.