That's good to hear DCF... I'm just hitting Gold and have two Y+ transpacs in the next 6 months.... hoping to have some success there upgrading to BP...
I tend to book Tuesday/Wednesday out, Monday/Tuesday back.... Hope that is a decent tactic too.. cos it suits my travel patterns!!
To the OP.... I'll report on my upgrade luck SYD-AKL vv this week (cert one way, Airbucks the other - both on 767 flights natch!) ... but I suspect you are looking for better value than that!!!