I prefer underground. Easier to hook up stations that way, and if people build grand houses and want a station without affecting said house, those two does not interfere.
EVE Online characters:
Daedalus II ex-CEO TOGOA, Daedalus III slave of Daedalus II
Little Molok Asura Engineer
"Each day I don't get an attempt on my life by a robot from the future I see as a personal failure"