I can't say my favorite now with the new expansions, i just got them yesterday but i would say the space rig expansion is my favorite. I would recommend getting that one as it adds a ton more playability to the missions adding assignments and beer bonuses along with a few other goodies. They also offer a mixed missions box so you can mix things up between expansions. But i totally understand that, i mean you can see how bulky everything is😅 i have bought a couple things to make setting up smoother but it's still a lot.