I've played every Yamaha arranger keyboard up to the T3 and from my perspective they're excellent for live performances. My dead time between songs is essentially zero seconds. I can switch to any screen I need in the blink of an eye, and I can do this while performing a song. The secret to effectively using any brand of keyboard during liver performances is knowing the operating system--something that damned few people ever take the time to learn.

Cheers,

Gary