By far, the finest vector software for the Amiga is (was) DrawStudio, by Graham & Andy Dean, published by LH Publishing.
I had it running quite well on an 8MB A1200, but it really shines on a high-end Amiga: 24bit colour, gradients, bitmap fills, PostScript output, etc.
It was one of a set of graphics software that also included ImageStudio and TextureStudio. Even now, DrawStudio is still a very capable vector package, especially if used with MetaView (a vector converter).
