Hi Riff - I have offices in three cities so I punt all over Brisbane, Sydney and Melbourne. I'm Sydney based (when I am not travelling).
I started off using Reddit, where I got a lot of leads and there was some good discussion, although it is fragmented. Have also tried PP, ISG and TNT. I'd say, of the different options, TNT is the only one that has dedicated reviews of Sugarbabes and a Sugarbabe community. There's quite a few guys on there that are sharing Sydney SB content from when I went on earlier today.
I'm always keen to hear from anyone who wants to talk Sugarbabes and equally share what I know in return. If it's not already clear, it's one of my favourite punting subjects ;-)