G2 seems the winner.
https://www.cameralabs.com/tamron-sp...-vc-g2-review/
Just trying to find where.
Grey market around $1500 - 2 year int. unofficial warranty.
Local around $2000 - 2 year AUS official warranty - plus it looks like I will need help with micro adjustments on the usb dock.
And my preference is to shoot volcanic eruptions from a focal length of 200