I really liked their aquanauts sets, I had the crystal factory one :)
Aww damn, I always wanted the factory.
I settled for that small shark sub, it's just a shame that the joints for the arms and stuff broke quite easily.
My favorite lego set is an old one that was given to me from my cusin who somehow thought you can get too old for em, it is an ice base thingy with a weather machine.
Was it orange? And did it have giant missiles and stuff?