Went with Eden Park.
Higher capacity, the NRL get to make the call anyway and, crucially, if we want the powers that be to turn Eden Park into a decent rectangular ground, show them how good the atmosphere can be at a well organised event.
That and everyone boycotting cricket matches (are there any, anymore? I thought the ICC had banned Tests at Eden Park?) until the Eden Park Trust gets the message.
However, the NRL hasn't done itself any favours by allowing other clubs to play at smaller grounds because of the Traditional Home Ground thing.