I bought a DS-1 for $250 this past summer and it’s become my favorite synth. Aside from a few technical problems the thing has been a solid workhorse, and I’m still discovering new sounds within it’s limited architecture.
I’ve also got a Prophet 600 that never stays in tune, a busted Sequential Max that was given to me, a couple Poly800’s, a CZ101, a Korg MS2000 (too digital sounding but good enough for live work) and some old Compac thing somone just gave me.