Question is bound to come again, I asked it myselfe with my Zoner Character.
Zoner ID has the bonus of being neutral and the drawback that you can only freely use Transports up to 3.600 in House space. Period.
Still : The GMG and IMG bases let you to some interesting trade routes with the Whale, and for everything else thete still is the BWT or the Serenity. It works quite well.