SA voices are 'kool' (sic), and so would also be divisi voices and stack modes. Just as you probably had no IDEA that conditional voices and sample switching were useful BEFORE Yamaha came out with it, and lo and behold! Suddenly it is 'kool'...

And trust me, a mode like this that automatically made what you normally play and turned it into more accurate, better sounding brass voicings (or string voicing, woodwinds, you name it) is EXACTLY like SA voices, which takes what you normally play, and makes it SOUND better.

Why not put something down AFTER you have heard, tried and used it..? Honestly, I don't think I ever met a 'musician' so determined to deride any possible improvement to his 'tool', despite the evidence that pretty much all other improvements are being used happily..!

You know, I bet we could go back fifteen years (were you using arrangers back then?), use the SZ search, and find you putting down pretty much every newer feature you happily use today. Or were you more open to improvement back then, and it is only recently that your mind has calcified?

Let's see what has happened since then...

Four Variation, six fill arrangers (who could possibly need that many?)
Break/Fills (the stop button works just fine for MY bottom line)
Songbooks (why would I need this when I select everything from the front panel on the fly?)
Multi-pads (this wouldn't help me make any more money)
Harmonizers (what would I use a fake harmony for?)
User programmable OTS settings (the factory ones are just fine)
MP3 players (what's an MP3?)
Lyrics displays (who needs that?)

Come on Donny! Hasn't it occurred to you that you are HAPPILY using new technology every day?

It simply seems you are unable to make the jump from realizing that older 'new' technology is today's commonplace feature, and that today's 'new' technology will be tomorrow's commonplace feature, that you can't imagine doing without.

And didn't you use the S910 happily for what, three YEARS or so, before the need for a better Songbook feature made you need to change? And you had had a PA800 for a while before that, so it's not like you weren't aware of its existence. That's hardly a pressing need if you could happily gig for that length of time (and post incessantly about how great it was) knowing that a better alternative existed.

I remember the last odyssey through almost every arranger available you made, each one in turn the bee's knees, each one dropped after a few months, as you tried something else. Your posts about transferring Songbooks from PA500 to PA800/PA3, your continued interest in BK-5's seems to indicate that you aren't exactly happy with the PA500 (once you hit on the S910, your posts about moving to something different basically stopped dead).

So perhaps it might be best to drop pronouncing how perfect your current arranger is, and how no other arranger feature could be of any possible use, until you have settled down once again. Or you might be faced with the embarrassment of finding yourself back on an arranger that you currently put down!

My prediction is that you will be on the next PSR as soon as it ships.
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An arranger is just a tool. What matters is what you build with it..!