I have a T4 and although it has a great sound, the OS is horrifying. I thought the T3 was difficult, but trying to get the T4 to accept the T3 styles and the saved setups I copied to it from the T3 Hard Drive is a nightmare. I've had the keyboard 7 weeks during which time, I have spent most of my time trying to get it to work properly. Yamaha have issued an update and it did correct one or two of the 'glitches' but mine is still very unpredictable making me think there is something wrong with the keyboard.

I'm beginning to wish I hadn't changed now.

Audrey