You can get excellent Midi loops and sequences (Witness the Yamaha Mega voices) but if you compare them to an audio recording, even the best just don’t have that natural feel.
On the other hand, unless you are making direct comparisons, it’s debatable as to whether you can hear the difference. (Particularly in a mix)(Drums are the exception)
The SA voices are also an excellent way to get around the lack of processing power of Hardware based keyboards being able to change the sound of an instrument in real time. (You’ve got to take your hats off to Yamaha for that)
Technology however moves on, and sound modelling (Basic sound generation stored in samples and then manipulated in real time, just like the real instrument) is now starting to become a reality. (And will eventually make all the big sample sets and disc streaming an irrelevance)(Just look at the many VSTs that have been produced recently)
As far as I am aware, Wersi OAS 7 is the only Arranger/Organ system, that comes as standard with this technology, and while difficult to program at first, (A new way of developing sounds has to be learnt) once sound designers get into the swing of things then all the old technologies will pale. (The current sounds (The Sound Packs in particular) already leave most other keyboards behind, particularly when you compare them to Real Instruments and not just other keyboards)
Point to note: if you look at most (But not all) of the technological advances in music keyboards, they have mainly come from the smaller manufactures.
Whichever way it goes the future looks bright, but just remember, that top performers on keyboards (And that stand the test of time) got there by playing the instruments, not by allowing some sophisticated backing or feature to do the work for them.
Enjoy Life, Play a Wersi
Bill
[This message has been edited by abacus (edited 01-22-2008).]