What are your favorite synths that have an unduly deserved bad or non-existent rep?
Mine would be the Roland MKS-7 Super Quartet. Essentially a three part multi-timbral Juno-106 with a 606 Drum Machine integrated. Hostile user interface, but those luscious squishy sounds are all in there!.
Also, the Peavey Spectrum Organ. This ROMpler sounds grrrreat, especially when you defeat the phony Leslie and effects and put it through a real rotating horn. I make sure my snobby musician friends hear it first before showing them what it really is.