I am a piano sound man than I can return a keyboard just because of only the piano voice. When I play, its 90% piano voice.I don't know maybe when I had my personal Yamaha PSR S950, my piano touch wasn't that good and my skill level because I returned the 950 back to vendor for a yamaha DGX650 arranger-piano 88 key. The S670 is a new keyboard we bought at work and I was happy about the piano sound. I just played a dry piano sound without any editing. In my church we have S650 but what I got today from the 670 is amazing. It made me want to go back to arrangers especially the Genos which is 76 keyed close to the 88 DGX650 piano I have been using, which has a good bold piano voice but lacking in many arranger functionalities for one band man.Its true I developed a very good touch through my playing but i think what I felt today is keyboard functionality and capability more than my touch and skill. What more can I get should I do some editing or changes in voice!
Good work to Yamaha. I used to complain about S series piano but today I am impressed and happy that I will rarely use other voices when playing than the piano voice which is my favourite one. Thanks to Yamaha.