BN does have some advantages.
Security is now a lot better, if you ain't got a ticket you don't get in, unlike MB where the great unwashed with a GA just wonder through during the race, some picking up what they fancy.
It's a lot easier to get in and out of by car/bike than MB.
Even the most distant areas of BN are a shorter walk into circuit than 50% of MB.
You can get pegs in the ground, at the Classic I was bending rock pegs!!
It's almost impossible to get tickets except at exorbitantly over inflated prices through agencies.
Camp C'Arnage is on BN.
The banking at MB is over rated, the best bits have been taken over by corporate, the rest I can get to, but wouldn't bother, see comment about great unwashed

.
MB was the best camp site, but I would question that now.
Rose tinted glasses and all that.