As a disclaimer, never heard of them so obviously don’t have them installed but I gotta comment.
The stanceparts air cups seem to have more limitations that a full air suspension system which can automatically adjust for different loads to keep the car level and can be set at different ride heights for different driving situations.
It seems those air cups have the primary and singular purpose of lifting the car 30-50mm temporarily so you can drive over speed humps…
So the question becomes what problem are you trying to solve and what features are you wanting?
Also gotta say that the manufacturer has so much faith in their quality that they only warrant the cups for 2 years while the other gear is covered for even less at just 1 year. Hardly a great endorsement of quality in my view

Maybe that’s common for after market suspension but it would hardly be reassuring for me
As for looking great, they can’t be seen when installed