The Razer Naga X is an excellent mouse for MMO gaming. It has a 12-button layout on its left side and a ton of programmable buttons, including the up/down scroll
Razer Naga X Review
Razer Naga X MMO Gaming Mouse
Razer Naga X Review - IGN
Why You Need the Razer Naga X Gaming Mouse
Razer Naga X Review
Razer Naga X Review
Razer Naga X Review - IGN
Razer Naga X Review: Surrounded By Strong Predators
Razer Naga X
Razer Naga X Review: Addition by Subtraction work for this new MMO Mouse?
Razer Naga X Review