Is Optical or Laser Mouses Better For League?

I actually wasn't too sure about the answer to this question, but the article I found explained the difference between optical and laser mice pretty thoroughly. I'd say give the link below a go and let me know if you still have any questions!

http://www.pcgamer.com/gaming-mouse-myths-busted/

In a nutshell:

Chris Pate: “[In a ‘laser’ mouse], it’s actually not a laser sensor. It’s an optical sensor. It just uses a laser for illumination. But people find it easier to shorthand it to optical versus laser, even though it’s really infrared or red LED [for an optical mouse] versus VCSEL (vertical-cavity surface-emitting laser) ... it’s still an LED, but it’s a laser ... All the sensors are taking multiple thousands of pictures per seconds, comparing them to each other, and determining the translation direction and distance based on those images. ”

Neither, I use a living mouse. Once in a while I'll use a rat or hamster.

the ones that do not use the red light are better. whichever they may be. regardless of which you choose noise, heat, and different types of waves will interfere and make them way way way way way less effective.