As far as I know the bases are BN, DN, MKY, RK, MEL and AD. SYD base closed I believe, for the Metros but I think some of the Westwinds still operate out of there as well as Darwin. Used to be approx six months on a Metro before you could move across the the jets. The base you get is where they need drivers, like everyone else they'ed be finding it hard to find new drivers and retain the ones they've got.
Hope this helps