For under $800 US, it sure packs a lot of bang for the buck, especially for those who take the time to explore all the amazing features in this machine. The technology available with today's arranger keyboards just boggles the mind.

Gary

I agree Gary .....Shhhhhhhhhhhhhhhh

May I ask you, Donny, what is your current attitude towards overall Yamaha’s sound? I had an impression that you’d rather prefer Roland or Korg because Yamaha was, well, too much “Yamaha” for your taste. Do you still have that feeling with S670?

Yamaha has a distinct sound much more refined to my ear
and a bit more compressed then the others of which I have used all.
The S670 by far despite a few limitations that workarounds can correct easily has surpassed my expectations for sound quality,
with styles and sound converted, 3rd Party, Expansion packs, or factory. navigation using the coursers for me is far more efficient and build quality is really nice, buttons etc,...
And quite frankly aside from the SA voices you get on other models of much higher cost the S670 can and will sound just as good as my previous S950,S970, etc, with just a bit a tweaking, CMP, and minor edits no problem. Speakers sound great, and bass ports on the sides give it a nice robust sound for sure. Keybed is typical light weight Yamaha MOTL, I would have to say BEST BANG for the BUCK of any Arranger KB on the market today no doubt.
Any other question just ask.

Take care

So an older, excellent condition PSR-3000, or a new
S670 ?

The PSR-3000 was an absolute workhorse and continues to be for a large number of pro entertainers in my part of the world. The only reason I stepped up to the S-950 was I felt it sounded just a bit more polished than my 3000. And, I absolutely loved some of the new styles and voices, though there were some that I missed and had to retrieve them from the legacy voices. Growl sax on the 3000 is just awesome.

Gary

It seems that S670 does not work with a microphone (no effects or vocal harmonizer). Other than that, it has a lot of new voices, I'd say, rather advanced, including a new Concert Grand piano.

To my knowledge, S670 is a first Yamaha arranger at this price and weight, which has 128 voices polyphony.

Before S670 there were S650 and S550, which were rather simplified. I guess, having a competitor like Korg PA300, Yamaha had to make this MOTL arranger much closer to TOTL level.

Larry, This is exactly my predicament. I have a PSR 3000 in excellent condition. Is there really a justification to spend even $800 in the S670? It is certainly tempting.

If your happy with your sound and features on the keyboard you have keep it and enjoy playing it,....if you want or need everything the Psr3000 doesn't give you vs the newer keyboard on the market
then buy a NEW model. The decision is YOUR & YOURS alone
for YOUR needs it's as simple as that.
The justification is in YOUR Head only.

Good luck.