Worry? Frans, you should know by now I'm not a worrier. Definitely a wasted emotion.

Thankfully Yamaha has it's own "sound", and I, like many others, are glad they have stuck to their proven formula. I bought the Tyros4 because I love the sound, and to me, that's most important in a keyboard.

I don't feel one brand is "better" than the other...just "different".

If it meets your needs, then it is "the best" for you.

The Tyros4 meets, and even exceeds, my needs as a professional player, so, to me, it is "the best".

Ian