

Either TOS or Enterprise. Because they were boldly going. TNG was always flying around like a delivery van. Voyager was fleeing home. DS9 was sitting there and waiting for things to come to them. (Well, for the bits I watched; I gave up after the first season and understand things started to actually happen after that.)
I haven’t watched any Star Trek property after Enterprise.
(Also: opening up a Star Trek community war is “casual”? 🤣 )