Aaahhh... the PSR-640 and PSR-740.

What I would say to "lokehinde" is congratulations on your purchase of the 640. No, it is not a bad machine. Have you wasted money buying the 640 because you know the 740 is better? Probably not. That's because the 640/740 are essentially the same, with the only major difference being vocal harmony, organ flutes, a few more voices, and 64-note polyphony.

So, if you don't do any vocals, you won't need vocal harmony, organ flutes - nice but not really necessary unless you're a fan of the real church organs, and 64-note poly is only fulfilled when you're recording complex sequences/arrangements using a computer's sequencer.

Marcelo -- still trying to decide on the 640/730/740? I tried to help you with that, but it appears you're stuck with the 32/64-note poly thing... see above. Again, the two digital displays and enhancements is enough to convince anyone that the 640/740 is far superior to that 630/730 series.

Hope this helps!

Bryan
ptshpboy@hotmail.com