I love to hold onto those old synths. I still have

Casio CZ-101
Casio CZ-1000
Yamaha TX-802
Yamaha SY-77
2 * Roland JX-8P
Waldorf Pulse
Roland JV-880

But my main keyboard nowadays is still an old Yamaha Motif 6 with PLG-AN analog modeling board installed. A great keyboard for playing live with a classic rock band.

Yeah I know people don't value FM synths that highly .... but they just don't know FM that well. Good FM patches are the most expressive sounds available and still are unmatched on any any modern synth. The factory patches on the DX-7 just didn't show how good FM could be unfortunately. If it wasn't for the fact I already have 2 FM synths I would have bought the PLG-FM board for my Motif 6.

Not sure what my next keyboard will be but the Korg Kronos sure has me interested.