The one thing UD and I have in common is we both rely heavily on our vocal ability. In my case it's because I'm a mediocre player at best, therefore, my vocals are essentially my right hand. Dave has an incredible right hand.

The slight delay caused by triggering the vocal harmony on the PSR series, and T1, T2 and T3 has always been a pain in the a$$ for those of us that use the harmony feature. While I was able to work around it for many, many years, it was still a real pain. The addition of a stand-alone vocal processor solved the problem, plus provided much better vocal effects.

Overall, I believe the S-910 is one Hell of a keyboard for live performers. And, when properly tuned, which does not take a lot of effort or expertise, the machine really rocks. Yamaha apparently fixed this, and other, problem(s) with the T4, and if that technology is transferred to the ensuing S-series models, they should be awesome. Who knows, I may just trade in my aging PSR-3000s. Gotta' finish the boat work first.

Cheers,

Gary