We had another thread on this about a month ago.
I have done cbr-syd-bne-syd-cbr once last year. It was designed to be cbr-syd on Kendell CRJ, syd-bne on QF 747SP (the reason for the trip), then bne-cbr on QFlink 146-200. As it turned out, only the Kendell flight eventuated. The 747SP was changed to a 747-200
which was so late I missed the BNE-CBR flight but as a good consolation I scored a 2 sector return - back to Sydney on a Qantas 767-300 then an Eastern Dash-8-300, which happened to be my first flight on this type.
Earlier this year, I did CBR-MEL-CBR on Virgin 737-700s and have a SYD-BNE-SYD planned on Virgin in late August.
But the cream comes in just over a week:
CBR-MEL QF 733
MEL-WLG PH 738
WLG-SYD FJ 73G
SYD-NTL QFlink BEH (Impulse)
NTL-CFS-BNE QFLink DH8
BNE-CBR QFlink 146-200 (Southern)
All in 2 days (6 hours overnight in WLG)