Well said, Lee...I feel the same way and I have a Yamaha.

The proof is in the playing, and how the instrument fits for your style of playing, and how the OS works for your needs.

I, too, am waiting until I have quite a few hours on the Tyros4 before I make my decision.

The wonderful third party support and great user forums are what add a hidden value to having a Yamaha.

I'm a great fan of the PSR-S910...it's a wonderfully playable instrument, and I'm quite happy with it, and it would take a lot to make me change.

So far, what I've heard and read about the Tyros4, is slowly convincing me...I didn't feel that way about the Tyros3, but the T4 seems to be a substantial upgrade on an already excellent instrument, so it may be what fits my needs, which is mainly recording and doing little video soundtrack backgrounds for some friends.

My only wish so far, is that it had a good set of built in monitors...but, that's just my little want, and not a deal breaker.

Good luck, and I'll be interested to know how you feel about it after testing; you might have yours before I get mine, and I know you'll give it a thorough and detailed evaluation.

Ian