I've heard about the awesomeness of the Logitech scroll wheels, the one where it just keeps going when you scroll. I've tried it in a Best Buy, and it seems pretty cool. Is it useful in practical use? I'd mainly use the mouse for gaming. Here's the mouse I'm eyeing. http://gaming.logitech.com/en-us/product/g502-proteus-core-tunable-gaming-mouse. Does the scroll wheel justify getting a Logitech mouse?