I'm curious as to why you did that; usually folks upgrade but you went in the other direction. Was it for reasons of portability? Complexity?
As far as trying out new keyboards, that's unfortunately the exception rather than the rule these days. When I bought my first keyboard about 13 years ago (PSR-S710) I was able to try it out in a music store and subsequently bought it. Same thing for my next one, a PSR-S950. Not so with the PSR SX900, although by this time I was familiar enough with these keyboards that I was pretty sure I'd like it. As it was, I almost sent it back due to the changes in the OS which I had trouble adapting to. Made it over the hump, though, and am very glad I kept it.
FYI: About 2 years ago I swapped from Genos to SX900. I had the oportunity to try them out for several days, just side by side. The soundquality of the SX900 is amazing and for me good enough! The Genos has a lot of functions I never gonna use. It is (for me) already hard enough to touch the right keys, without even have time to turn on various knobs. Even the sliders were 'too much' for me. I'm a hobby/home player and no giggin' !
It by far meet my needs. I think I will certainly enjoy it for many years, as long as the hardware and / or software of the SX does not let me down! I had the KN SX7000 for 13 years, if I keep the SX900 for as long as I am .... too old to worry about another
It must be the characters SX in both models which intrigues me
It is of course a personal choice. My journey of discovery in the land of the Yammies ran from Tyros5-76, Genos, PSR S770, PSR S975 and finally the SX900. All excellent keyboards with a beautiful sound.! The Genos, a top keyboard, but just too big (+ 21 cm bigger than the SX900) for my homestudio. I don't need so many keys, 61 is enough!
So as people have/wants so many different keyboards i guess that is a prove that they enjoy making music, and that's the right attitude!