From price point of view, it costs about the same. From what I know, but I don't know much. Or am I wrong with this point.
With STE you work faster. Or not much?
With Starlight you can still expose screen using films. For the time I-Image might not be working for whatever reason. Or in case you find positives in archive, but cannot locate files. Because it's reorder from 1992.
But maybe you can use LED on STE even if printing part (head, etc...) is not working? But it's probably the same drive for exposing and printing.
Than again two machines most likely give you more maintenance and most likely more breakdowns than one machine.
More scenarios and concerns?
Boris