I should have added aesthetics as a point to be considered in the choice.
The frame is the purple / white 80s one, It's an acquired taste.
So either all silver- double with silver NTS bar and pillar.
Or Triple- all black with black Deda stem, bar and pillar.
Mind you , still can't get round to taking the parts off one and building the frame.
The silver might win because all the parts are currently not on a bike...
Decisions, decisions...