Next week's Rock Band 3 launch marks a giant step for the franchise, with the pro mode edging its gameplay closer to actual musicianship. The keyboards and drums are easier transitions to make, given what's essentially one-to-one mapping for notes and logical input solutions. But what about a guitar, arguably the genre's flagship instrument? We've seen and tried two solutions to the pro guitar input conundrum: the Squier Stratocaster, an actual guitar that's still not ready for primetime, and the Mad Catz Fender Mustang, a 102-button replica more reminiscent of peripheral than instrument. Still, with a mid-November release date, the lat
