-
Depends on aesthetic you're going for. Only just seen you're looking, 9 speed groups tend to be cheaper to but as a group but come up less frequently. This finished yesterday https://www.ebay.co.uk/itm/204151529819?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=CM1wCsWNTru&sssrc=2349624&ssuid=nX6awT--SqO&var=&widget_ver=artemis&media=COPY
10 speed is same look apart from later cranks, I would say to try and avoid power torque of you want to maintain at home.
11 speed you can buy centaur, still in production. Potenza is nice as well, no longer in production but can pick up secondhand. All the 11 speed stuff has black plastic in it as well, so less of a classic look.
This athena group and wheels look in good condition and a bargain, would suit a 90's build to a t. https://www.facebook.com/marketplace/item/842286470525205/?ref=facebook_story_share
I think 10 speed might be the sweet spot for looks / availability.