Just an update for any viewing users:
I've been using the Redragon Centrophorus M601 for about 3 months now, and it's shown to be very promising. There are no negatives I can say about this mouse, especially for the price of it. It works to a standard/above standard degree for any game, depending on the type of game you are playing, and the adjustable in-built weight tuning system is very useful.
TL;DR; This mouse works well for League.