You're right...my total time Oz GA amounts to a few hundred hours in a Conquest 2 in between jet jobs several years ago. It had all the bells and whistles...was bloody good fun actually...one of those aeroplanes I had lusted after in my 'Yoof' but thought I had missed out on enroute to boredom.
Hang-on the Falcon and Citation corporate jets were Oz registered too, although I never flew them in Oz...does that count as 'GA'?