The PSR-S750 is essentially the earlier PSR-S910, but without the vocal harmony and using the same sound system as the PSR-S950.
It has the same SA voices as the S910, and the same styles and polyphony.
It's an awesome little keyboard, and a great bang-for-the-buck.
Ian
Thats what i noticed, where the improvement over the S650 seems huge and the price difference only about 20%. The differences to the s950 ( outside the harmony) seem much much less, but the price difference is almost 100%...
If you dont need a VH, then the choice seems allmost a no brainer.... Never paid attention to this little keyboard, but at the current price of just a liitle bit under €900 its as good as price performance gets