I am looking for a list of the quests and rewards given by each of the spacestations, that give quests. I seem to remember one or more spacestations, would give you 100% repair, instead of 75%, after completing a mission.
My personal fav is the quests from the Tat. Space Station (for Smugglers) that grants you Palace Access documents that allows you to use the starport at Jabba's Palace. I think the one from Dantooine (for Rebs) will allow you to land at the Rebel Base in the far NW corner of the map.
Dantooine Space Station is one that will only repair you to 75% until you have done the quest and then if gives a full repair.
There's a similar quest line from the Dathomir station that lets you get full 100% repairs (instead of just 75%). Opposition is mostly T3 with a few T4s.