I'd go Harrop (or ARB) in the front, and Aussie locker in the rear to save a few bucks, or Harrop (or ARB) in both
I think front locker is often more useful than rear
This.
You can never fully make up for shìtty maintenance.
And rust is a hard no for me.
I've had good experience with factory lockers, but not sure they'd be the deciding factor