So…
If its a swiss army knife to do all sorts of things:
cant go wrong with a Virus Ti (i know you mentioned no digital but with 16 part multi timbrality, effects, arpeggiators, waves etc etc… i sometimes wish i kept mine).
If its all about the raw sound and filter… and you like a vintagey tone… forget everything and buy an OB-6. dont mind the 1 LFO. the sweet spot is enormous…
I would add the SUPER 6 as has been mentioned is incredible - friend has it and when i heard this binaural science fiction shit i was really impressed in the flesh.
Also, if you run into some extra money for pure tone check out Abstrakt Instruments VS-1 which is a clone of the legendary OB-X… or Black Corperation’s Deckards Dream MK1, clone of the CS-80