I'd recommend the sphere for Borg space stations, myself. Especially a 'flattened' or ellipsoid sphere. It's a natural shape for very large structures in space. Look at the examples in nature!
BTW, all of the images look a bit too dark. We have to be able to see these in the system window, remember...
[ July 29, 2002, 20:54: Message edited by: Baron Munchausen ]