Possibly the Technics Kn6000 ...
Not exactly sure when I switched to the KORG Pa600, then Pa900 ...

First AKB circa 1992 (?) - Technics Kn1000 - with a floppy disc drive ...

PSR 740. Still got it!

The arranger addiction started with a Roland E20 back in the 80'es.
Sold E20, and I was dedicated Technics user for a long time, KN5000 was my last KN and the 'love of my life' regarding keyboards. 😍
If I remember it correctly, 10 years ago it was SD-1 and G-70. Then sold SD1 and added T4, sold G-70 and added KMA, sold T4 two years ago to make room for Genos.
Did not think it would happen, but I like it more and more each day I sit down by it.
KMA collecting dust and is ready for sale or maybe give to grandkids for fun. Lurking for a PA4X-76 to add on top of Genos, but I don't rush it, maybe it will never happen.

Pa2XPRO

Orla kx10 to Korg pa500 musikant from Thomann (Germany). Then pa600 around that time. Ketron xd9 somewhere in there.

This was my first arranger kb early 1980's
Korg's first SAS20

for 20 yrs before that before that I used a
B3, Rhodes, Juno 60 stacked in bands

Started my solo act with the PSR3000. Next up, PA800 and my current love affair for many years - 3X

I've had 'em all.

Two Solton MS-60's, an SD-5, a Midjay, a Roland of some kind.

Still have them. Still use them for film score roughs; not for many gigs.

R.

I still have an ms60