Battlestar Galactica....
There's just something about the Nostromo and the Torrens that I just can't help loving. I think it's the way Charley Henley made the class look and feel like a real working ship - A bit battered around the edges and with luxuries kept to a minimum because the owners want to focus on payload and revenue, not crew comfort.She's hardly a visual looker, but there's no doubt that this is a ship you'd choose if you want to actually do something like haul a few million tonnes of ore or a thousand colonists in cryo plus all the parts to start a settlement.
The enterprise design was really revolutionary at the time. My TOP1 favourite...
When people just post a picture of their favourite ship it is not that interesting.
Old-school B5 fan here... Hyperion and Omega class: