Way back ( 1979-83) when I was leaving cycling and trying to get a job /house / life, Vitus seemed to have got their act together and sorted out some nice tubesets the 980 was the 531 copy IIRC but they did some which rivalled Reynolds / Columbus /Oria but for some reason came badged as Peugeot /Gitane.. classy all the same
It has fastback / shot in stays always a winner as it's never a cheap option, plus the chrome. Seems to have a steeper head tube than the seat tube, always nice for a light bike
It's after my time but classy Gitane made some nice frames, as did Motobecane even when they called themselves MBK.
I love SWB bikes as they dance rather than being an armchair