I own three.
Roland RD-1000
Korg Trinity Pro-X
Korg 01/W Pro-X
Used to own:
Korg Kross 88 (!st generation), had it for about a year from 2019-2020, traded for a pair of Event TR8 monitors.
GEM Pro-1, had it for about six months in 2013-14, traded towards an original Alesis Quadrasynth, as the Pro-1 would keep freezing up on me when playing.
Kurzweil MIDIBoard, had it from 2006 till 2007, traded for an M-Audio Keystation 88ES because I needed something to play my live laptop rig, and the MIDIBoard was four times as heavy as the Keystation, and like the aforementioned Pro-1, it would freeze up on me constantly.