First of all, thanks a lot for all the hints and the help. Right now assimilating all information. As of me I chose open.
Thanks !!!!!
De Las Casas
I took a long trip to Sag A* in a hauler (pre engineering) and back, in Open.
Coming back into the bubble was adrenaline shake inducing trip - I'd like to say that I sold all the data at Lave after a few narrow squeaks but in reality it was an out of the way system close to he edge of the bubble and I saw no one else. Quite stressful though, even so.