Im with silky on this one
in one hand i have a 20 year old injector with old technology.
In the other i have a modern day injector without a major difference in price.
You would be

to choose greens over siemens injectors
Its only my personal opinion.
and when you say the cosworth engine must be rubbish aswell. Since the cosworth engine was built there have been many modifications to enable it to cope with more power and to make it stronger in one way or another . You cant modify a Green injector, If you could i would be going for 8 Modified spray pattern and impendance green injectors in my car.
Sorry but i have witnessed a lot of different arguments on the forums fueled by one person in paticular and have not interviened but i feel quite strongly about this one so i have.