The best deal is imho the DSS-1 - if you have the space to keep it...
However, like the other guys have already mentioned, the DW/EX-8000 is very nice too, and the classic Korg DDL really adds to the sound. A few audio examples:
Bells SE1 nice and hypnotic bells, with the DDL
Low Strings some classic hybrid digital/analog strings
Choir digi-choir that reminds of the Roland JX-series
Synth Bass 1 classic synth bass of the '80s
Prologue a modern-sounding synth with sweeping filter and DDL