I just think that it might be better to soup up my 970 than get an SX900, even if the SX900 has improvements, to be sure.
Bernie,
absolutely! The sound engine of the PSR S970 is still top notch, and not that much different from that of the SX900. Especially if you can use it at its fullest with our software (a thing that is not possible with the firmware supplied by Yamaha, which is practically unchanged since the '90s of last century).
Although Yamaha wants to always sell you the latest and the greatest HW (which incidentally is ~90% equal to the previous one), what really counts is the man who plays it (as Henni's demos clearly show).
The weakest link of the chain is the player, not the machine. To improve the strength of the whole chain you have to improve the strength of the weakest link. As Henni said, a tool like our software lets you better exploit your creativity and then obtain better results. Probably not as outstanding as Henni's, just because not many of us are as much talented as he is, but surely you do see a difference (listen to Henni's audio demos just playing the supplied preset styles).
In addition you get MORE and BETTER features that not even a 4 k€ Genos will bring you (its style playing engine and features are no different than those of your PSR S970).
When you have time, download for free our demo. Play with it for a while just listening to the 860 (!!) supplied styles. It will take you busy for a while. But we are sure you will definitely see a difference (quality and variety) with what you have heard till now coming out from your PSR S970's audio jacks.
You can download the demo anonymously (nobody asks you the email). If you do not like it, just delete it and you are done. It will not cost you a dime!!
If you like it you can keep it and use it forever as a preset machine (saves are disabled). You just have to restart it every 10 minutes. For home self entertainment it could be acceptable. And it still won't cost you a dime!
Since you have similar arranger softwares, we would like you to make a comparison and hear your opinion. We are sure many forum readers will be interested as well, since a demo for a direct test is not always available.
Thanks.