I also had an Orion before my Hull E do think this way
Orion you'll have to mine intensifly and store it in large quantities , the Hulls are very modular you can do lots of things from simple cargo to weapons platform to medical ship and so on.
Orion is roll specific "Mining"
Hull E is big and Multi deck ship with large rooms as they say.
So i think some luxury.
When your doing small cargo but high value it could be stored in one of your rooms without extending the hull.
Plus empty its going go amply faster.
An empty looking space freighter would be less of a target i think.
So if its a choice between Orion vs Hull E, for me the Hull wins
If its the choice Orion and Hull E i would get both.
But in the end its what you want to do in SC Do you wanna be limited to one platy type or have some options.
Sure the Orion is also modular but also constricted allot more to Mining.https://www.youtube.com/watch?v=2GEGyBgZ8Ko