I bit the bullet and have just purchased a new Greenfield Enduro Longreach.
Greenfield are the last of the Australian-owned domestic rotary makers, and I bought this mower for that reason. I chose the mid-range model - the Longreach (of three models).
The chassis is commercial grade. Have a look at that all-metal height adjuster and large ball bearing wheels. I chose the standard bag catcher; but a poly catcher is available.
The engine is the USA-built Series 850 Briggs (with CI sleeve).